Made of plastic in black color, and tapered shape design for good stability The inner diameter of the U-shaped chair leg is 12mm No need to stick, simple to roll up and not easy to fall off, good choice to protect your furniture and floor Reliable furniture and floor protection for home, office, hotels and restaurants, surgeries, hospitals, nursing homes, kindergartens, etc. Package contents: 20 U-shaped plastic caps Features: Made of high quality material, durable, non-toxic. Prevent your sofa, chair or desk to leave a large bump on the floor when nothing is underfoot. Ideal for protecting your home furniture, tables and chairs from shifting or sliding. Can also protect your tile, wood or vinyl floor from scratches. Plastic material in black color, tapered design for good stability. No glue needed, they slip on at a glance and not easy to come off. Good choice to protect your furniture and floor. Features: Material: plastic. Color: black. Contents: Pack of 20 U-shaped plastic caps.