【Package Contents】 Made of high quality material, durable to use, comply with the requirements of the 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 from external rust, water, dust, etc. Helps to extend the life of screws and helps decorate your furniture. 【High Performance】 With the new mold compression molding, 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 with high performance according to strict rules. And it has a variety of models to meet your different working needs. 【Easy Storage】 All 145pcs dome nut covers are placed 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