Designed specifically for drilling sheet steel, built for speed. Impact-rated shank for use with impact drivers. Flared body depth stop for improved safety and easy tool removal. HSS cutting edge with 8% cobalt for extra durability. 0.6mm slim kerf for reduced resistance and rapid drilling. Internal ejection spring automatically ejects the metal disc for hassle-free drilling. Ideal for drilling steel trunking, cabinets, enclosures, panels and cladding. Cuts Sheet Steel Steel Solid Barrel for Low Vibration 20mm - 25mm Dia. Holesaws For Use with 3-Jaw Chuck Machines on Rotary & Impact Modes Impact Driver Shank Flared Depth Stop 0.6mm Slimline Kerf 8% Cobalt HSS Cutting Edge Internal Ejection Spring Cuts Sheet Steel Steel Solid Barrel for Low Vibration 20mm - 25mm Dia. Holesaws For Use with 3-Jaw Chuck Machines on Rotary & Impact Modes Impact Driver Shank Flared Depth Stop 0.6mm Slimline Kerf 8% Cobalt HSS Cutting Edge Internal Ejection Spring