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...