1.5 Inch Perforated Insulation Pins Self Locking Washers Flat Washer Round Galvanized Steel Plaster Washers for Wall and Ceiling (1000 Pieces)

Reasonable price. Good quality. On time. And they work on duct liner stick pins

Works great with the posts I bought

I believe these are designed for holding insulation in place. I used them to secure my old failing plaster walls and ceiling's before mudding them over and painting. Good price!

These worked great for me though the edges are sharp. That was my only complaint.I used nearly the whole box installing a radiant barrier in my garage and I had to be very careful not to cut my finger when they spun with the scew and be careful not to let the washer slice through the radiant barrier. If there was a different style that had a rounded edge, that would have been much nicer but I couldn't find anything like that.

These washers are great! Mind literally blown on how useful these are. One of my taillight assemblies had deteriorated around the holes where the screws go that hold it in place. This created an oversized hole for the screw. I didn't want to have to buy another assembly just because of this particular issue. Another issue was that the performed holes in the assembly were recessed. I found these washers and they did the trick. Saved me a lot of money 💰. They are flexible and came at a great value. I got a lot of washers in the box that I purchased for a decent price! I'm very satisfied with this product! 👍👍👍👍👍

These did not hold well not a very good product

When I originally ordered these type of washers, I was in a hurry and didn't do much checking. When I ran out of them, I did a better job of checking and found the exact item for about 30% less. The washers are made well and exactly what I needed to complete the the job. Do your homework.

Used them to attach hard styrofoam to the walls and it held the foam in place while the glue was setting up.