Hole Saw Accessories, Quick Change Pilot Drill Bit, Shank Size 1/2 In., Shank Shape Hex, Fits Hole Saw Dia. 11/2 In. to 65/8 In., Pilot Drill Size 1/4 In. dia. x 75/16 In. L, Material High Speed Steel, Replacement Pilot Drill. Features. For use with patented Rapid Switch and Rapid Core Eject Hole Saws. Immediate and effortless plug removal. Smooth cuts even at low speeds. Tungsten Carbide TippedSpecifications. Weight 0.19 lbs