Starrett KFC06021 6 Piece Bi-Metal Fast Cut Electrician\'s Hole Saw Kit This Starrett KFC06021 6 Piece Bi-Metal Fast Cut Electrician\'s Hole Saw Kit combines a new tooth material with extra cobalt, for enhanced heat and wear resistance, with a new 5.5 TPI positive rake tooth design. This provides a smoother, 30% faster cut when compared to Starrett\'s previous Constant Pitch Hole Saw. Specifically suited to cut stainless steel and mild steel sheet, the Fast Cut saw will also cut through metals, wood, cast iron, plastic, and plaster. CONTENTS 16mm 20mm 25mm 32mm 40mm 51mm A1 Arbor A10 Arbor FEATURES New tooth material with extra cobalt for enhanced heat and wear resistance - improving the product life New 5.5 TPI positive rake tooth form provides less torque for a smoother, faster cut in all materials 30% extra gullet volume for better material penetration Ideal for stainless steel and mild steel sheet, tubes and other materials with a thickness of up to 3mm (1/8\") Enclosed in a convenient EVA carrying case. SPECIFICATION Pack Qty: 6 Pcs Arbors: 2 Weight: 2kg Package Dimensions (LxWxH): 254 x 289 x 88mm Cat. No.: KFC06021 Item No.: AX5400