The rubber caps are versatile and can be used in various scenarios, including protecting the ends of bolts and screws. Their snug fit ensures that they stay in place, preventing any accidental dislodgement. These screw caps are also great for sealing vacuum pipes in automotive applications, ensuring that no debris or debris enters the system. Features -Inner diameter specification: 7.0mm, 10mm, 10.5mm, 20mm, 22mm -Color:Black -Material:Rubber -Size:2.90X2.20X2.20cm/1.14X0.86X0.86in -Sturdy construction: crafted from rubber, these screw caps offer excellent durability and resistance to wear and tear, ensuring reliable protection -Effective protection: these screw caps provide a tight seal that prevents debris, water, and other impurities from damaging your screw threads -Userfriendly design: screw thread protectors are easy to use, allow for quick installation, making maintenance tasks more efficient -Multiple options: with a variety of sizes available, these screw caps can fit different thread dimensions, catering to diverse needs -Broad usage: suitable for various settings such as construction sites, engineering projects, and home renovations, these screw caps enhance thread protection and longevity Package list: 12 x screw thread caps (Φ7.0mm) 12 x screw thread caps (Φ10mm) 8 x screw thread caps (Φ10.5mm) 8 x screw thread caps (Φ20mm) 8 x screw thread caps (Φ22mm)