The Grainger 7/16" x 6" Threaded Shank Drill Bit is made of high speed steel and has a black oxide finish for durability. It features a threaded shank that fits power drills and can drill through metal, wood, and plastic. The drill bit has a 118 degree point angle and is designed for general purpose drilling in metal. It can drill 7/16" diameter holes. The overall length is 6". This drill bit is ideal for metalworking applications that require drilling holes in steel, aluminum, cast iron, and other metals.