100 pieces M8 protective screw and nut covers, 13mm wrench size, black plastic

For hex screws and nuts, 13mm wrench. Protects against corrosion, impacts, and damage. Easy assembly and disassembly without damage. Improves the appearance and finish of screw assemblies. Dimensions: 13mm from inner hole to edge, 15mm total height. Note: All data is measured manually; please allow a 1-3cm error due to differences in light and display. There may be color variations; please refer to the actual item received.