Morse Hole Saw, Series: MHST, 3 in Dia, 1-15/16 in Cutting Depth, 3 TPI, 5/8-18 Arbor, 1/4 in Dia x 3-3/32 in L Drill, Tungsten Carbide Cutting Edge, Steel Body, Toothed Cutting Edge, 55 to 170 rpm, 3/8 in Chuck, Hex Shank, 3/8 in Shank, Use Arbor: MA35PSCT, Applicable Materials: Acoustic Tile, Countertops, Drywall, Fiberboard, Fiberglass, Nail-Free Wood, Plaster and Plastic