Milwaukee® 49-56-7250 Large Thread Quick-Change, 5/8-18 Thread, 3/8 in Hex Shank, 1/4 in Dia x 3-1/2 in L Pilot Drill, For Use With Fits 1-1/4 and Larger in Hole Saws, 3/8 in and Larger Drill Chucks, Hardened Steel

Milwaukee® Hole Saw Arbor, Large Thread Quick-Change Universal, 5/8-18 Arbor, Hex Shank, 3/8 in Shank, Hardened Steel Cutting Edge, Steel
Milwaukee® Carbide grit hole saws are designed for cutting abrasive materials such as brick, block, cement board, fiberglass and tile. Use a Carbide tipped pilot bit when cutting ceramic tile, brick, and other abrasive materials.