The Diablo SPEEDemon Red Granite Hammer Drill Bit is a high-performance carbide-tipped bit designed for fast and durable drilling in tough materials. The bit has a Diameter of 3/16" X 6" Length X 4" drilling depth.Shank Style: Hex. The Multi-Ground Grip Point Tip enables aggressive starts and clean, fast holes and the Flute Design allows for efficient dust removal keeps the bit cooler and stronger.