10pcs Waterproof Dome Nylon Hex Nut Bolt Cover Cap Protector Protection Cap M6/M8/M10/M12

10pcs Waterproof Dome Nylon Hex Nut Bolt Cover Cap Protector Protection Cap M6 M8 M10 M12Description Model M6 M8 M10 M12Material nylonColor blackSize Apprex As the picture showsQuantity 10pcsFeature Metric hex nut nylon coverMade from high quality nylon odorless non toxic good insulativity Providing the all around protection for the nuts with waterproof and dustproof function aviod the nuts from rusting efficiently prolong the lifetimeEasy to install and remove fit for railway gas pipeline and valve buldings balustrade and mechanical equipmentPackage included 10X Nylon Nut Cover