With any standard 1/2 inch (12.7mm) 14-degree dovetail router bit, you can create your own tracks, eliminating the need for expensive aluminium tracks. It’s an entire system designed to give you all the functionality of t-track and t-track accessories, at a fraction of the cost. The most versatile profile ever. Create a variety of jigs that move freely, and tighten down anywhere you can route a groove. Compatible with standard ½ inch (12.7mm) 14 degree dovetail profile. Includes (4) 10-32 1-½ inch (38mm) long dovetail track screws with wing knobs. Allows for 360 degree range of motion with dovetail grooves in grid layout. The idea of using the Dovetail profile as a track came about while founder and inventor Henry Wang was trying to attach a tall fence to his table saw. Standard c-clamps got in the way, and the only solution, it seemed, was to install T-track to secure the fence. Convinced there was a better way, Henry repurposed the classic dovetail profile as a quick, reliable means of securing jigs and fixtures without the cost of cumbersome aluminium tracks. Important Notice: Use Micro Jig products to improve your safety when machining, they should complement your machine guards not replace them. All relevant health and safety practices should be used which are applicable to your country of residence.