4 Pack 1.5 Inch Square Tube End Cap Plastic Plugs, 1.5x1.5 Square Tubing Plug, Tube End CapsTubing Post End Cap Suitable for Square Tube Square Plastic Plug, Tubing Post End Cap Square Tubing

took some brute force, but got it into a 1 inch square opening. it wont be coming out easily.

Used to keep metal legs on Traeger Scout from rusting and scratching up the table. Just a tad too big, but was able to force them in with a hammer. Looks fine though.

Used to replace a broken cap on my weber ssp. Fits perfect!

Bought these to put on the ends of my Zero grind rail and they fit perfectly. Very secure fit, used hammer to insert. Very pleased with the result.

Great Product

These will work for a 1” hole

These plug holes of the appropriate size.