Description: Material - The plastic plug insert is made of durable PE material with fine workmanship, good flexibility, non-slip, anti-corrosion, wear-resistant, not easy to deform, and long service life.Noise Reduction & Floor Protection - This tubing end cap can provide stability and support; the non-slip design protects the floor from scratches, wear, dents and other damage caused by the movement of the chair; and acts as a shock absorber to reduce the noise generated when the chair moves on the floor.Easy to Use - The plastic plugs feature multiple flexible ribs for a snug fit, no glue or other additional tools are needed, just insert it into the tubing post to complete the installation. With good flexibility, it buckles the chair legs and is not easy to fall off when moving.