Pilot Drill Bit, Shank Size 1/4 In., Shank Shape Round, Fits Hole Saw Dia. 7/8 In. and Larger, Replacement Pilot Drill No. Mfr. No. 49-56-8025, Material Carbide Tipped, Pilot Drill Size 1/4 In. dia. x 2 In. L, Overall Length 2 In., For Use With Milwaukee Diamond Plus Threaded Hole Saws 7/8 In. and Larger, Includes (1) 1/4 In. x 2 In. Pilot Bit