Hole Saw Kits: Kit Type - Electrician's Hole Saw; Cutter Construction - Bi-metal Matrix II; Number of Sizes - 14; Min. Hole - in - 3/4; Max. Hole - in - 4-3/4; Conduit/Pipe Min - in - 1/2; Conduit/Pipe Max - in - 4; Case - Plastic; Additional Information - Includes: (2) Arbors, Arbor Adaptor, Spacer and (3) Pilot Bits; Manufacturer Series - Ice Hardened