Usage Tips:Quality material: the flexible end cap is made of rubber material, soft and durable, which can serve you for a long time, and you can also cut it into appropriate length according to you own need, convenient for your use. Wide application: this rubber cap protector is suitable for fence railings, forged iron cover, bolt replacement, screw or nut safety, which can cover any scratches or burrs that may occur during the cutting process; In addition, it can provide protection against injury by pointed rod and tubing edges. Easy to operate: you only need to cut the protective cover to the proper length, then open the opening of it, finally adjust the protective cover to the appropriate position, which is very convenient to use and can serve you well. Practical design: these bolt rubber caps are designed with classic color, suitable for use in multiple home accessories; In addition, they have various size choices, combined with soft and elastic material, which can also play a nice protective role. Colour: black Material: rubber Size: 4 kinds of inner diameters: 7mm/10mm/12mm/20mm Package Contents: 80 sets * Protective caps (20 7mm protective caps, 20 10mm protective caps, 20 12mm protective caps Caps, 20 20mm protective caps) Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.