High quality material: Our black circular rubber end caps are made of vinyl rubber material, which is soft and durable, with good elasticity and insulation. They are sturdy and thick enough to soften impacts. In addition, you can cut the rubber cap protective cover into appropriate lengths according to your needs, making it convenient to use. Multiple Sizes: These bolt rubber caps come in 9 different sizes to choose from, including 20 pieces of 2/25 inch/2mm, 20 pieces of 3/25 inch/3mm, 20 pieces of 9/50 inch/4.5mm, 20 pieces of 6/25 inch/6mm, 20 pieces of 7/25 inch/7mm, 20 pieces of 8/25 inch/8mm, 20 pieces of 19/50 inch/9.5mm, 10 pieces of 12/25 inch/12mm, and 10 pieces of 4/5 inch/20mm, suitable for household accessories. Usage: Choose a suitable size thread protector. It is recommended to select a slightly smaller outer diameter than the item to be protected, then cut the protector to a suitable length for easy use. Rubber bolt caps are suitable for various household applications and are ideal for covering screws or other threaded components, round pipes, furniture legs, and more. Rubber Hat Features: Our thread protectors help prevent wear and tear on kitchens or wooden floors. They are suitable for metal chair tips, furniture, chair legs, table legs or tips, as well as for covering screws, bolts, and any round pipes. They also help protect against injuries from sharp rod and tube edges. Widely used: This rubber cap protector is suitable for fence railings, cast iron covers, bolt replacement, screw or nut safety, and can cover any scratches or burrs that may occur during the cutting process. It also provides protection from sharp rod and tubing edges. Color: Black Material: Rubber Package Contents: 160 x Rubber End Caps Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. The measurement allowed error is +/- 1-3cm.