M.K.
Long lasting choice for very hard abrasive materials.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.. 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.