Brand new HSS annular cutter, with unique cutting edge geometry provide efficient cutting, fast feed rate,less vibration,smooth hole surface and long tool life,the effective of drilling is much better and quicker than the common drills. HSS annular cutter has the advantage of being durable, super tough and longer tool life. HSS annular cutter with weldon shank can be used with most major magnetic drills, can also be used with machine tools such as mills and large drill presses with tool holders. HSS annular cutter can be widely used in drilling steel, copper, aluminum, stainless steel and plastic, in either plate or pipe form. Features details 15/16? Diameter x 1" Depth of Cut include free Pilot Pin Made of tough M2 High Speed Steel for longer tool life, superior heat treated for maximum durability. Cut holes in steel quickly, precisely and safely. It is much more efficient than regular drill bits. Ideal for clean and burr-free cutting. 3/4" Weldon shank with 2 flats - fits most major brands of magnetic drills, can also be used with machine tools such as mills and large drill presses with tool holders. Can widely used in drilling steel, copper, aluminum, stainless steel and plastic, in either plate or pipe form.