【Package Contents】 Made of high quality material, durable to use, meet the requirements of European ROHS and WEEE environmental directive. Come with 50pcs M4, 30pcs M5, 20pcs M6, 10pcs M8, 20pcs M10, 15pcs M12, Total 145pcs, can meet your different needs. 【Function】 These rubber hex nut covers are good for protecting screws co.ukom exterior rust, water, dust, etc. Help extend the life of screws and help decorate your furniture. 【High performance】 Thanks to the new compression molding of the mold, the nut cap supports high precision, which is very easy to use. Thanks to precision craftsmanship by many experts, such a hex nut cap is entitled to high performance according to strict rules. And it has a variety of models to meet your different working needs. 【Easy storage】 All 145 pieces dome nut covers are put in a transparent storage box, you can always find the corresponding components easily, which can also save you a lot of time. 【Wide application】 Intended for hexagon shaped bolts