H6769 Carbide Hole Saw Saw Dia 1-1/8 In. Tungsten Carbide Grit Max Cutting Depth 1-9/16 In. Arbor Hole 1/2-20 Use Arbor 3TGR9 Thread Size 1/2-20 Pilot Drill 13N970 Drill Size 1/4 Dia x 3-1/2 in L For Cutting Brick Block Cement Board Fiberglass and Tile