Fully wrapped roller protection cover, locking, not easy to fall off. Elastic rubber, easy to install. Thickened felt pad to protect the floor from scratches, quiet and wear-resistant. Prevents the casters from rolling freely and can easily push the wheelchair. Waterproof and moisture-proof, anti-aging Color: Black Material: TPE Package Contents: 10 x Chair Wheel Stoppers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.