The Grainger 11/16" x 6" High-Speed Steel Threaded Shank Drill Bit is made of high-speed steel with a black oxide finish. It has a threaded shank that fits 3/8" and 1/2" chucks and a 118 degree split point tip. The overall length is 6" and the drill diameter is 11/16". This drill bit is designed for use on steel, cast iron, aluminum, copper, brass, plastic and wood. It has a web thickness of 1/8" and comes with a 30 day satisfaction guarantee from Grainger.