Thread Size: M10 x 70mm Package Content: 4set x Bolts, Nuts, Flat & Lock Washers Kits Bolts and accessories are made of 304 stainless steel, which has higher hardness, corrosion resistance and rust resistance. Hex bolts are threaded fasteners with a hexagon head shape and are designed for installation with a wrench. Widely used in home and office appliances, communication equipment, mechanical assembly and other industrial equipment, and provide a firm fixing indoors and outdoors.