Description These nut end covers are good for protecting screws from rusting outside, water, dust, etc., help to prolong screws' service life and help to decorate your furniture as well. Made with good craftsmanship and high-quality materials, it has a long service life and can serve you well. Features -Color: Black. -Material: Rubber. -Size: About2.00X2.00X2.00cm/ 0.79X0.79X0.79inch. -High-quality materials and good craftsmanship ensure their durability and practicality. -Used to decorate hexagonal bolts to improve the appearance of the product. -Effectively rustproof and corrosion resistance, suitable for indoor, outdoor or humid environment. -These protective covers are very practical, providing good protection for screws and nuts. -These bolts covers are easy to install, just press the nut cover directly onto the bolt. Package list: 50 x M4 bolt caps 30 x M5 bolt caps 20 x M6 bolt caps 10 x M8 bolt caps 20 x M10 bolt caps 15 x M12 bolt caps