DIMENSIONS AND COLOR: M10 nut and bolt covers, wrench size 17. Color : Black, pieces per pack: 100 pcs. MATERIAL AND QUALITY: All our hole fillers are made of high quality PE polyethylene, a durable material resistant to deformation, UV rays and various weather conditions. PERFECT DESIGN: The nut covers have been designed with the highest attention to detail, featuring a thick core and a unique design with a click tab to permanently cover the hex nut bolt. It forms a harmonious whole, thus giving an aesthetic appearance to the final product. SAFETY: The nut covers and screw covers protect protruding hexagonal screws and nuts against weather conditions and protect to a large extent against corrosion and rust. The hexagonal cap shape also protects against injuries. INSTALLATION AND USE: Extremely simple assembly thanks to the hexagonal shaped tab (enforced by click). Nut covers are used in the general construction sector, for machinery and equipment construction, furniture, playground equipment and other elements of garden architecture, where aesthetics and quality matters. Nut covers are designed to protect the metal bores of nuts from damage. They protect the connection between the screw and the nut. The screw covers are designed for varied application