CTKAR Retractable Utility Knife
The Crescent Auto-Retract Utility Knife retracts automatically when the cut is complete, even if the slider is in the forward position. This feature cannot be overridden under normal use, thus reducing the posibility of workplace injuries. Crescent Utility Knives are inspired by every-day-carry (EDC) design, making them compact and comfortable to carry onto any jobsite.
The Crescent Auto-Retract Utility Knife retracts automatically when the cut is complete, even if the slider is in the forward position. This feature cannot be overridden under normal use, thus reducing the posibility of workplace injuries. Crescent Utility Knives are inspired by every-day-carry (EDC) design, making them compact and comfortable to carry onto any jobsite.
The Crescent Auto-Retract Utility Knife retracts automatically when the cut is complete, even if the slider is in the forward position. This feature cannot be overridden under normal use, thus reducing the posibility of workplace injuries. Crescent Utility Knives are inspired by every-day-carry (EDC) design, making them compact and comfortable to carry onto any jobsite.
The Crescent Auto-Retract Utility Knife retracts automatically when the cut is complete, even if the slider is in the forward position. This feature cannot be overridden under normal use, thus reducing the posibility of workplace injuries. Crescent Utility Knives are inspired by every-day-carry (EDC) design, making them compact and comfortable to carry onto any jobsite.
in 5 offers
The lowest price for CTKAR Retractable Utility Knife right now is $19.95 at Radio Parts, compared across 5 retailers.
The all-time low was $19.95 on 31 July 2025. That's the lowest price we've ever tracked ā a great time to buy.
Prices last updated 16 June 2026.
Last updated at 16/06/2026 10:48:38
CTKAR RETRACTABLE UTILITY KNIFE
30-day returns
Crescent Safety Auto-Retracting Utility Knife
Delivery $10
Crescent Auto-Retracting Safety Utility Knife CTKAR
Delivery between 19ā25 June $12.90
Crescent Safety Auto-Retracting Utility Knife
Delivery $15
CRESCENT Auto-Retracting Safety Utility Knife CTKAR
Delivery between 23ā26 June $9.70
originally posted on lowes.com
This is a unique blade. It has an auto retract feature which is just the coolest invention. I have tested it on multiple things to ensure itās the same each time. The blade, after cutting through the material will automatically retract without any extra steps. Iām sure it was designed as a safety option, but itās just super neat. The color of the handle makes it very easy to spot from afar. The quality of the handle feels like it will last a long time, plus it had black blades that come with it. Itās very very cool.
originally posted on lowes.com
At first I really liked this auto-retracting safety blade. I never had one and the concept is intriguing, especially when my kids need to use a tool like this. It has a nice heavy weight to it and the blade will automatically retract when finishing a cut. There is storage for two extra blades within the tool so theyāre always handy when you need a replacement.The problem I have with this tool started when I tested actually replacing the blade. I followed the instructions exactly. Removing the blade was no problem. Inserting the new blade, however, was the big issue. No matter how hard I tried I couldnāt get the blade to seat properly and thus when retracting the blade it would not fully go into the body if the knife, sticking out ever so slightly (to varying ...Ā MoreAt first I really liked this auto-retracting safety blade. I never had one and the concept is intriguing, especially when my kids need to use a tool like this. It has a nice heavy weight to it and the blade will automatically retract when finishing a cut. There is storage for two extra blades within the tool so theyāre always handy when you need a replacement.The problem I have with this tool started when I tested actually replacing the blade. I followed the instructions exactly. Removing the blade was no problem. Inserting the new blade, however, was the big issue. No matter how hard I tried I couldnāt get the blade to seat properly and thus when retracting the blade it would not fully go into the body if the knife, sticking out ever so slightly (to varying degrees each time I tried). This is not safe. I tried several more times and also had my wife try, but no matter what we did we could never get the blade to fully retract after changing. On my last attempt, somehow the blade got outside of the holding mechanism and pinned between there and the body of the utility knife. I didnāt realize this until I retracted it. Now the replacement blade was completely wedged in the body of the tool. At this point the only way to get it out was to completely disassemble the tool (see picture attached). This of course, was a nightmare, as it was nearly impossible, requiring two people to put the thing back together, aligning all the springs and such. I stripped the larger square drive screw putting it back together so no more taking it apart. Once finally back together, I was able to use the tool two more times (fully functional and retracting fully) before the blade just fell out. I donāt have the time to waste continuing to put the blade back in every few uses so hopefully this doesnāt continue.So if you donāt have to replace the blade it works fantastic. However, if you have issues like me replacing the blade this can be a total nightmare. Maybe the one I received was defective (got blade to seat every time after I took it apart and put back together but not straight out of the box from the manufacturer) or maybe itās just a bad design. Without having another to compare to I couldnāt say for sure. I can say that I am very handy, could build an entire house from the ground up, and currently have 4 other ābox cutterā knives that Iāve never had any issues with but none with an auto-retracting design. But for the blade replacement issue, 5 Stars, but because I have a basically useless tool now if I canāt get the blade to stay in place (and canāt open it) 1 Star.
originally posted on homedepot.com
Right out of the package this tool is ready to use. The packaging may make you wish it was already opened, but safety first! This knife has a feature to automatically retract the blade when you release the pressure used to make the cut! Remember, safety first. The design fits well in the hand and itās easy to change the blade and did a great job on the Sheetrock. It can take a bit of practice to get used to, but all users kept all fingers healthy and intact.
| Warranty | Limited Lifetime |
| Net Weight (kg) | 0.2 |
| Product Length (mm) | 264 |
| Product Width (mm) | 105 |
CTKAR RETRACTABLE UTILITY KNIFE
30-day returns
Crescent Safety Auto-Retracting Utility Knife
Delivery $10
Crescent Auto-Retracting Safety Utility Knife CTKAR
Delivery between 19ā25 June $12.90
Crescent Safety Auto-Retracting Utility Knife
Delivery $15
CRESCENT Auto-Retracting Safety Utility Knife CTKAR
Delivery between 23ā26 June $9.70
This is a unique blade. It has an auto retract feature which is just the coolest invention. I have tested it on multiple things to ensure itās the same each time. The blade, after cutting through the material will automatically retract without any extra steps. Iām sure it was designed as a safety option, but itās just super neat. The color of the handle makes it very easy to spot from afar. The quality of the handle feels like it will last a long time, plus it had black blades that come with it. Itās very very cool.
At first I really liked this auto-retracting safety blade. I never had one and the concept is intriguing, especially when my kids need to use a tool like this. It has a nice heavy weight to it and the blade will automatically retract when finishing a cut. There is storage for two extra blades within the tool so theyāre always handy when you need a replacement.The problem I have with this tool started when I tested actually replacing the blade. I followed the instructions exactly. Removing the blade was no problem. Inserting the new blade, however, was the big issue. No matter how hard I tried I couldnāt get the blade to seat properly and thus when retracting the blade it would not fully go into the body if the knife, sticking out ever so slightly (to varying ...Ā MoreAt first I really liked this auto-retracting safety blade. I never had one and the concept is intriguing, especially when my kids need to use a tool like this. It has a nice heavy weight to it and the blade will automatically retract when finishing a cut. There is storage for two extra blades within the tool so theyāre always handy when you need a replacement.The problem I have with this tool started when I tested actually replacing the blade. I followed the instructions exactly. Removing the blade was no problem. Inserting the new blade, however, was the big issue. No matter how hard I tried I couldnāt get the blade to seat properly and thus when retracting the blade it would not fully go into the body if the knife, sticking out ever so slightly (to varying degrees each time I tried). This is not safe. I tried several more times and also had my wife try, but no matter what we did we could never get the blade to fully retract after changing. On my last attempt, somehow the blade got outside of the holding mechanism and pinned between there and the body of the utility knife. I didnāt realize this until I retracted it. Now the replacement blade was completely wedged in the body of the tool. At this point the only way to get it out was to completely disassemble the tool (see picture attached). This of course, was a nightmare, as it was nearly impossible, requiring two people to put the thing back together, aligning all the springs and such. I stripped the larger square drive screw putting it back together so no more taking it apart. Once finally back together, I was able to use the tool two more times (fully functional and retracting fully) before the blade just fell out. I donāt have the time to waste continuing to put the blade back in every few uses so hopefully this doesnāt continue.So if you donāt have to replace the blade it works fantastic. However, if you have issues like me replacing the blade this can be a total nightmare. Maybe the one I received was defective (got blade to seat every time after I took it apart and put back together but not straight out of the box from the manufacturer) or maybe itās just a bad design. Without having another to compare to I couldnāt say for sure. I can say that I am very handy, could build an entire house from the ground up, and currently have 4 other ābox cutterā knives that Iāve never had any issues with but none with an auto-retracting design. But for the blade replacement issue, 5 Stars, but because I have a basically useless tool now if I canāt get the blade to stay in place (and canāt open it) 1 Star.
Right out of the package this tool is ready to use. The packaging may make you wish it was already opened, but safety first! This knife has a feature to automatically retract the blade when you release the pressure used to make the cut! Remember, safety first. The design fits well in the hand and itās easy to change the blade and did a great job on the Sheetrock. It can take a bit of practice to get used to, but all users kept all fingers healthy and intact.
This Crescent Tools Auto-Retracting Safety Knife has a nice sturdy feel and ergonomic design making it easy to use for most situations that require a utility knife. The knife has the features you expect, like extra blade storage and no-tool blade change. The only missing features, mainly because it is a "safety" knife are that the blade can not be locked in the extended position and there is no lock/detent position to only expose the point for shallow, box-cutter use. You can push the blade extender part of the way to expose only a small portion of the blade and it works well and even auto-retracts when the blade loses contact with what you were cutting. It would be nice if there was some type of detent at the standard shallow box-cutter depth. The auto-retracting ...Ā MoreThis Crescent Tools Auto-Retracting Safety Knife has a nice sturdy feel and ergonomic design making it easy to use for most situations that require a utility knife. The knife has the features you expect, like extra blade storage and no-tool blade change. The only missing features, mainly because it is a "safety" knife are that the blade can not be locked in the extended position and there is no lock/detent position to only expose the point for shallow, box-cutter use. You can push the blade extender part of the way to expose only a small portion of the blade and it works well and even auto-retracts when the blade loses contact with what you were cutting. It would be nice if there was some type of detent at the standard shallow box-cutter depth. The auto-retracting safety feature works well and only occasionally retracted the blade when making a long cut, which seemed to occur if you hesitated while making a cut.
The Crescent 7.5 in. Auto-Retracting Safety Utility Knife is a solidly built tool with some weight to it. Constructed of metal and plastic it comes with a Lifetime warranty.The tool includes 3 standard utility blades. 1 in the chamber and 2 in the handle which flips up with a pinch on the end of the grip.A metal spring loaded retainer keeps the spare blades from rattling around in the handle. Installing or removing blades is just a matter of pushing the release on the top front of the tool forward and pushing the blade lever forward. Remove the blade, insert the new one and push the release toward the rear of the tool to lock it in.The auto retract feature works well but it does require pressing the tool down firmly to engage it. If you just use a light touch, ...Ā MoreThe Crescent 7.5 in. Auto-Retracting Safety Utility Knife is a solidly built tool with some weight to it. Constructed of metal and plastic it comes with a Lifetime warranty.The tool includes 3 standard utility blades. 1 in the chamber and 2 in the handle which flips up with a pinch on the end of the grip.A metal spring loaded retainer keeps the spare blades from rattling around in the handle. Installing or removing blades is just a matter of pushing the release on the top front of the tool forward and pushing the blade lever forward. Remove the blade, insert the new one and push the release toward the rear of the tool to lock it in.The auto retract feature works well but it does require pressing the tool down firmly to engage it. If you just use a light touch, the tool behaves like any other manual retractible utility knife.The slightly bent design of the tool makes it very comfortable in the hand. Add to this its weight and this is an easy to handle and control utility knife. I wish Iād had this a few weeks ago when I had to cut vinyl flooring. It would have made that job so much easier and saved me the many cuts I got from the knife I had to use at the time.This is going to save me a lot of time and effort on future projects and just cutting down boxes when needed.
This review is for the 7.5 Auto retracting safety utility knife. This device has and meets the basic needs one typically has for a utility knife. Itās a nice size for my hand, has an onboard storage area for blades and comes equipped with extras. The reason for the three stars is that it automatically retracts unless you hold it in such a manner that it does not, which is inconvenient when you need to make multiple cuts. There is a toggle type button on top that appears to be for the purpose of locking the blade so it doesnāt retract. However, I am not sure if mine might be defective because pressing the button with the lock icon does nothing. There are no instructions so itās unclear if perhaps there is some other process to lock and unlock the blade. If so, itās ...Ā MoreThis review is for the 7.5 Auto retracting safety utility knife. This device has and meets the basic needs one typically has for a utility knife. Itās a nice size for my hand, has an onboard storage area for blades and comes equipped with extras. The reason for the three stars is that it automatically retracts unless you hold it in such a manner that it does not, which is inconvenient when you need to make multiple cuts. There is a toggle type button on top that appears to be for the purpose of locking the blade so it doesnāt retract. However, I am not sure if mine might be defective because pressing the button with the lock icon does nothing. There are no instructions so itās unclear if perhaps there is some other process to lock and unlock the blade. If so, itās not intuitive. For this reason, for the typical needs of a utility knife, I do not recommend this one.
The Crescent Auto-Retracting Safety Knife seems to be well made (in China), but maybe it's a little too safe? The knife is operated by moving a thumb slide forward to expose the blade. The slide is spring-loaded, so you must keep pressure on it in order to keep the blade exposed. Remove your thumb, and the blade snaps back to the fully retracted position inside the handle. I'm sure this can lead to user fatigue over long-term use. In addition, even if you keep the thumb slide fully forward, the blade will auto-retract once pressure is applied to it and released. In other words, you must move the thumb slide forward and let it retract for each and every cut you want to make. This is maddening.Other than that, the on-board storage for extra blades is a nice touch; ...Ā MoreThe Crescent Auto-Retracting Safety Knife seems to be well made (in China), but maybe it's a little too safe? The knife is operated by moving a thumb slide forward to expose the blade. The slide is spring-loaded, so you must keep pressure on it in order to keep the blade exposed. Remove your thumb, and the blade snaps back to the fully retracted position inside the handle. I'm sure this can lead to user fatigue over long-term use. In addition, even if you keep the thumb slide fully forward, the blade will auto-retract once pressure is applied to it and released. In other words, you must move the thumb slide forward and let it retract for each and every cut you want to make. This is maddening.Other than that, the on-board storage for extra blades is a nice touch; looks like there's room for about 5. Blade changes are accomplished by pressing the black 'toggle' button, then pushing the thumb slide fully forward. At this point you can remove the old blade and insert the new. Then release the slide and press the 'toggle' button back to the locked position.A lot of thought and engineering seem to have gone into the creation of the Crescent Auto-Reversing Safety Knife, I just can't figure out who the intended customer is because itās way too āsafeā for the average person.
I like how this box cutter is made, its very ergonomic and fits very nice in your hands, more like a slight pistol grip. It comes with three blades, one already installed and two in a built in storage at the top back of the cutter handle. There is a lock at the front that locks the blade when you install it. This box cutter has a safety feature that I haven't seen on any before, where the blade retracks after you finish a cut. This is a nice feature to have, but I don't really like it, because every time it retracts,you have to push it out again and again, and I think it's a little bit too time consuming.Other than that, it's a very workable box cutter that deserves a place in your toolbox.
The Crescent 1/2 inch retractable utility knife is built very sturdy. I was excited to get a new utility knife because I had recently lost mine. Having the extra blade storage in the knife is a great convenience. The shape of the handle makes for easy use. While the utility knife seems very strong, I found the retractable blade mechanism to be a problem. Unlike most knives which leave the blade extended while in use, the Crescent knife retracts the blade as soon as you take your finger off of the mechanism. It also retracted while I was trying to cut with it. So, even though the knife seems well built overall, it seems they need to improve the blade mechanism.
A very well made product. The blade seems to remain retracted except for when you push the slide button forward with your thumb. Very easy to push it forward and hold it while using it. As soon as you release it the blade pops back inside. Very slick ... good idea. No sharp blade sitting around to hurt you. Changing or switching ends of a blade was also very easy to do. Slide it forward, push a small button and then pull the blade out or push new one in. Everything seemed to work well and again, felt like a very well made tool.
| Warranty | Limited Lifetime |
| Net Weight (kg) | 0.2 |
| Product Length (mm) | 264 |
| Product Width (mm) | 105 |
