Starrett HSS 20mm Hole Saw

Starrett Smoothcut Bi-metal Hole Saws Bi-metal holesaws for use with battery operated power tools with 1/4in. Hex drive. The constant pitch teeth means that these holesaws provide an exceptionally smooth cut. Ideal for cutting stainless steel, tool and mild steel sheeting plus plaster board, wood and thin plastics to a depth of 1/2in.
Complete assembly, no need for separate arbor or pilot drill
Hardened heat and abrasion resisting HSS teeth
Constant pitch of 8 teeth per inch