The black square tubing plug is made of premium plastic, it is widely used to chair legs, bench feet, table legs, bar stool foot, and fencesfencing railing posts, furniture end covers, fitness equipment end covers, gate rail post covers, trailer frame ends, pole pipe rod caps, metal bike rack fittings, wrought iron steel finishing plugs, or any sqaure opening. Features 1. Ribs design of tubing plug can provide a sure grip inside the tube, not easy to fall off. 2. Reduce friction, protect floor without scratches, easy glides. 3. The square tube end cap is easy to use that no tools needed. You are able to install by hands within minutes. 4. They serve as a long lasting solution for many household or outdoor projects. Specifications Shape: square Color: black Material: plastic Size: 1 14 inch x 1 14 inch (32mm x 32mm) outer diameter (OD Package Content 12 x 1.25 Inch Square Plastic Plugs Warm Tips When you buy before, please check size of the plastic plug is suitable for your tubing.