Feature●Fit Bolt Size: M6; Hex Socket Width: 10mm / 0.39"●Package Content: 50pcs x Dome Bolt Nut Protection Cap Covers●Made of PP plastic, sturdy and durable, smooth surface, not easy to break.●Suitable for hexagonal bolts and nuts, easy to install and disassemble.●It can provide good protection for your bolts and nuts and is a good tool to prevent them from rusting and corrosion.Description