M.K.
. These hole saws create clean holes in materials too hard or abrasive for standard bi-metal saws or so thin they would strip bi-metal or chip carbide teeth.Hole Saw, Series: MHSG, 1-7/8 in dia, 1-15/16 in Cutting Depth, 5/8-18 Arbor, 1/4 in dia x 3-3/32 in Morse Hole Saw, Series: MHSG, 1-7/8 in dia, 1-15/16 in Cutting Depth, 5/8-18 Arbor, 1/4 in dia x 3-3/32 in L Drill, Tungsten Carbide Cutting Edge, Steel Body, Gulleted Cutting Edge, 90 to 270 RPM, 3/8 in Chuck, Hex Shank, 3/8 in Shank, Use Arbor: MA35PSCT, Applicable Materials: Acoustic Tile, Asbestos Board, Brick, Cast Iron, Cement Board, Ceramic, Cinderblock, Composites, Computer Flooring, Fiberglass, Formica, Hardened Steel and Particleboard.Long lasting choice for very hard abrasive materials.