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Price comparison

Price data powered by pricesAPI.io

Last updated at 25/06/2026 21:09:16

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
Bunnings Warehouse

$22.90

Simpson Strong-Tie Concealed Post Base Suits 90mm To 100mm Square Posts

Delivery $12

Bunnings Warehouse

$22.90

Simpson Strong-Tie Concealed Post Base Suits 90mm To 100mm Square Posts

Delivery $10

Bowens

$22.95

Simpson Strong-Tie CPT Concealed Post Base Tie ZMAX Galvanised 90mmx90mm at Bowens

30-day returns

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

Excellent Post Base
27 December 2020Grant

originally posted on bunnings.com.au

Easy to use, sits low to ground and looks sleek ! highly recommend

Good when they're made right but many are not.
22 May 2022

originally posted on bunnings.com.au

I bought seven of these for a balcony railing. On two the pins fit the holes almost perfectly, on the other five the holes were about 0.8mm too big. The one with the holes the right size resulted in posts that worked perfectly: strong, no wobble. The other five resulted in posts that wobbled about. I spoke to Simpson and they claimed that they checked their stock and they're all loose, they're supposed to be that way. Which is garbage - I hate it when company employees lie like that. They're not all that way: two of mine weren't. I'm lucky, I have access to a machine workshop and made new 13.5mm pins (the size of the larger holes) from 316 stainless steel and drilled the posts to 13.5mm and they worked fine, too. The problem is that I now have zero trust in Simpson ...Ā MoreI bought seven of these for a balcony railing. On two the pins fit the holes almost perfectly, on the other five the holes were about 0.8mm too big. The one with the holes the right size resulted in posts that worked perfectly: strong, no wobble. The other five resulted in posts that wobbled about. I spoke to Simpson and they claimed that they checked their stock and they're all loose, they're supposed to be that way. Which is garbage - I hate it when company employees lie like that. They're not all that way: two of mine weren't. I'm lucky, I have access to a machine workshop and made new 13.5mm pins (the size of the larger holes) from 316 stainless steel and drilled the posts to 13.5mm and they worked fine, too. The problem is that I now have zero trust in Simpson Strong-Tie and won't use any of their products ever again, including nailing strips or anything else.

Not Worth The Extra Money
27 July 2021Josh

originally posted on bunnings.com.au

I bought these strong post ties, not very impressed. The vertical plate is slot thicker than a circular saw cut, I had to do multiple runs, you then have to run well past the end of the plate. Cutting with a hand saw will not do it. Then you need to be confident the holes you pre drilled will align, then bang in the studs. One of post split while driving on the studs as they are quite tight. Overall, will be using the standard saddles next time and save my time and money.

Specification

Total Weight0.95kg
Adjustable Stirrup (Yes/No)No

Price comparison

Updated about 11 hours ago
Please note: price history and price alerts are not available for some stores, including Amazon.com.au.
Bunnings Warehouse

$22.90

Simpson Strong-Tie Concealed Post Base Suits 90mm To 100mm Square Posts

Delivery $12

Bunnings Warehouse

$22.90

Simpson Strong-Tie Concealed Post Base Suits 90mm To 100mm Square Posts

Delivery $10

Bowens

$22.95

Simpson Strong-Tie CPT Concealed Post Base Tie ZMAX Galvanised 90mmx90mm at Bowens

30-day returns

Price history

Price history

Please note: price history and price alerts are not available for some stores, including Amazon.com.au.

Reviews

Excellent Post Base
27 December 2020

Easy to use, sits low to ground and looks sleek ! highly recommend

Grant originally posted on bunnings.com.au
Good when they're made right but many are not.
22 May 2022

I bought seven of these for a balcony railing. On two the pins fit the holes almost perfectly, on the other five the holes were about 0.8mm too big. The one with the holes the right size resulted in posts that worked perfectly: strong, no wobble. The other five resulted in posts that wobbled about. I spoke to Simpson and they claimed that they checked their stock and they're all loose, they're supposed to be that way. Which is garbage - I hate it when company employees lie like that. They're not all that way: two of mine weren't. I'm lucky, I have access to a machine workshop and made new 13.5mm pins (the size of the larger holes) from 316 stainless steel and drilled the posts to 13.5mm and they worked fine, too. The problem is that I now have zero trust in Simpson ...Ā MoreI bought seven of these for a balcony railing. On two the pins fit the holes almost perfectly, on the other five the holes were about 0.8mm too big. The one with the holes the right size resulted in posts that worked perfectly: strong, no wobble. The other five resulted in posts that wobbled about. I spoke to Simpson and they claimed that they checked their stock and they're all loose, they're supposed to be that way. Which is garbage - I hate it when company employees lie like that. They're not all that way: two of mine weren't. I'm lucky, I have access to a machine workshop and made new 13.5mm pins (the size of the larger holes) from 316 stainless steel and drilled the posts to 13.5mm and they worked fine, too. The problem is that I now have zero trust in Simpson Strong-Tie and won't use any of their products ever again, including nailing strips or anything else.

originally posted on bunnings.com.au
Not Worth The Extra Money
27 July 2021

I bought these strong post ties, not very impressed. The vertical plate is slot thicker than a circular saw cut, I had to do multiple runs, you then have to run well past the end of the plate. Cutting with a hand saw will not do it. Then you need to be confident the holes you pre drilled will align, then bang in the studs. One of post split while driving on the studs as they are quite tight. Overall, will be using the standard saddles next time and save my time and money.

Josh originally posted on bunnings.com.au
Simpson strong tie
20 June 2022

Well priced, design and finish good. Does what it says.Easy order and pick up

Gus originally posted on bunnings.com.au

Specification

Total Weight0.95kg
Adjustable Stirrup (Yes/No)No

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Simpson Strong-Tie Concealed Post Base Suits 90mm to 100mm Square Posts
Simpson Strong-Tie Concealed Post Base Suits 90mm to 100mm Square Posts
Simpson Strong-Tie Concealed Post Base Suits 90mm to 100mm Square Posts

Simpson Strong-Tie Concealed Post Base Suits 90mm to 100mm Square Posts

Simpson Strong-Tie Concealed Post Base Suits 90mm to 100mm Square Posts

$22.90

(5 reviews)

The CPT Concealed Post Base provides a clean, concealed look while providing a 25mm standoff height above concrete to help reduce the potential for decay to timber, at the post end. Available in 90mm (Black or Stainless Steel), 115mm, 140mm, and 200m sizes, the CPT forms part of Simpson Strong-Tie concealed structural connector range, which combines structural strength with invisibility. Manufactured in heavier gauge carbon steel for a stronger connection, base 2.7mm, plate 3.5mm, finished with ZMAX Galvanised. The post support blade can be used as a template for location to drill dowel holes. Black powder coated base for a modern appearance. Tested and load-rated engineering data available. Suitable for Glulam and solid sawn timber. It can be installed with either mechanical or chemical anchors (dependent on engineering specifications). The 90 mm size is also available in 316 Stainless Steel for for more corrosive environments such as coastal areas. All pins and fasteners needed for installation are included. When Installing, use all specified fasteners. Post bases do not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for non‐braced or non‐top‐supported installations. Anchorage Options, The holes in the CPT tabs are sized for 12mm diameter anchors, for cast‐in‐place anchors, there should be 22mm (±3mm) of anchor above the top surface of the concrete.

The CPT Concealed Post Base provides a clean, concealed look while providing a 25mm standoff height above concrete to help reduce the potential for decay to timber, at the post end. Available in 90mm (Black or Stainless Steel), 115mm, 140mm, and 200m sizes, the CPT forms part of Simpson Strong-Tie concealed structural connector range, which combines structural strength with invisibility. Manufactured in heavier gauge carbon steel for a stronger connection, base 2.7mm, plate 3.5mm, finished with ZMAX Galvanised. The post support blade can be used as a template for location to drill dowel holes. Black powder coated base for a modern appearance. Tested and load-rated engineering data available. Suitable for Glulam and solid sawn timber. It can be installed with either mechanical or chemical anchors (dependent on engineering specifications). The 90 mm size is also available in 316 Stainless Steel for for more corrosive environments such as coastal areas. All pins and fasteners needed for installation are included. When Installing, use all specified fasteners. Post bases do not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for non‐braced or non‐top‐supported installations. Anchorage Options, The holes in the CPT tabs are sized for 12mm diameter anchors, for cast‐in‐place anchors, there should be 22mm (±3mm) of anchor above the top surface of the concrete.

(5 reviews)

The CPT Concealed Post Base provides a clean, concealed look while providing a 25mm standoff height above concrete to help reduce the potential for decay to timber, at the post end. Available in 90mm (Black or Stainless Steel), 115mm, 140mm, and 200m sizes, the CPT forms part of Simpson Strong-Tie concealed structural connector range, which combines structural strength with invisibility. Manufactured in heavier gauge carbon steel for a stronger connection, base 2.7mm, plate 3.5mm, finished with ZMAX Galvanised. The post support blade can be used as a template for location to drill dowel holes. Black powder coated base for a modern appearance. Tested and load-rated engineering data available. Suitable for Glulam and solid sawn timber. It can be installed with either mechanical or chemical anchors (dependent on engineering specifications). The 90 mm size is also available in 316 Stainless Steel for for more corrosive environments such as coastal areas. All pins and fasteners needed for installation are included. When Installing, use all specified fasteners. Post bases do not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for non‐braced or non‐top‐supported installations. Anchorage Options, The holes in the CPT tabs are sized for 12mm diameter anchors, for cast‐in‐place anchors, there should be 22mm (±3mm) of anchor above the top surface of the concrete.

The CPT Concealed Post Base provides a clean, concealed look while providing a 25mm standoff height above concrete to help reduce the potential for decay to timber, at the post end. Available in 90mm (Black or Stainless Steel), 115mm, 140mm, and 200m sizes, the CPT forms part of Simpson Strong-Tie concealed structural connector range, which combines structural strength with invisibility. Manufactured in heavier gauge carbon steel for a stronger connection, base 2.7mm, plate 3.5mm, finished with ZMAX Galvanised. The post support blade can be used as a template for location to drill dowel holes. Black powder coated base for a modern appearance. Tested and load-rated engineering data available. Suitable for Glulam and solid sawn timber. It can be installed with either mechanical or chemical anchors (dependent on engineering specifications). The 90 mm size is also available in 316 Stainless Steel for for more corrosive environments such as coastal areas. All pins and fasteners needed for installation are included. When Installing, use all specified fasteners. Post bases do not provide adequate resistance to prevent members from rotating about the base and therefore are not recommended for non‐braced or non‐top‐supported installations. Anchorage Options, The holes in the CPT tabs are sized for 12mm diameter anchors, for cast‐in‐place anchors, there should be 22mm (±3mm) of anchor above the top surface of the concrete.

$22.90 - $22.95

in 3 offers

The lowest price for Simpson Strong-Tie Concealed Post Base Suits 90mm to 100mm Square Posts right now is $22.90 at Bunnings Warehouse, compared across 3 retailers.

The all-time low was $14.50 on 17 Mar 2026 — today's price is 58% above the lowest ever. It has been notably cheaper before — worth setting a price alert.

Prices last updated 25 June 2026.

Size:

140mm / 152mm Square
190mm / 203mm Square