Specifications: Color: black Shape: round Materials: plastic Features: 1.These plastic hole plugs are made of durable plastic and built in multiple ribs for easy installation and secure fixation. 2.These plastic plugs inserted into the table and chair legs, the floor will get fewer scratches and reduce the noises; They are suitable for plugging on the furniture legs holes or tube enclosures on trailers, racks, shop fittings, etc.. 3.Has many general uses: chair glide floor protector, fence post end cap or plug, fitness equipment, tubing and pipe end caps for finished clean look. 4. For easy installation, each tube insert comes with ribs, only requiring lining up with the tube before tapping it into position. Ribs provide a secure fitting and to prevent the need for additional adhesives.