【High-quality material】Our dome nut covers are made of high-quality plastic with smooth edges and high strength, not easy to break or deform, wear-resistant and durable. 【Easy to use】These assorted nut covers are easy to install and remove, easy to use, waterproof and dustproof, great for protecting screws from rust, water, dust, etc. 【Easy to store】All plastic hex nut covers come with a high-quality transparent plastic box for easy storage and transport, clear classification and can prevent nut covers from being lost. 【Wide applications】The black protective cap provides effective protection and enhances the appearance of the product at the same time. Screw caps can be used as high-strength fasteners for machinery, furniture, vehicles, etc. 【What You Get】You will receive 50 pieces M4, 30 pieces M5, 20 pieces M6, 10 pieces M8, 20 pieces M10, 15 pieces M12, a total of 145 pieces, multiple models, multiple sizes can meet your different needs, sufficient for your daily use.