Auniwaig 21mm HSS Hole Saw Kits for Metal, High-Speed Steel Hole Saw Cutting Kit Drill Bits Opener Cutter Tool, for Cutting Holes on Wood, Plastic Sheet, Stainless Steel, Iron, Aluminum Plate

【HOLE SAW KITS】- Cutting Diameter: 21mm / 0.83-inch; Total Length： 70mm / 2.76-inch; Opening Depth: 8mm / 0.31inch; Shank Diameter: 8mm / 0.31-inch; Shank Length: 20mm / 0.79-inch; Perfect for installing locks, knobs in doors and cabinets or drilling larger diameter holes through desks,etc.
【HIGH QUALITY MATERIAL】- Made from strong HHS high-speed-steel for durability, high hardness, fast cutting, impact resistance, wear high temperature; Sharp gears and anti-cutting with lower consumption make the product a long service life.
【FEATURE】- This metal hole saw applies central spring design. It can control the amount of feed and helps chip removal, avoiding damage to the drill bits.Each edge is a part of the characteristics of the cutting work, making the hole is not easy to produce the phenomenon of collapse.
【HIGH EFFICIENCY】- Sharp gears and anti-cutting with lower consumption make the product a long service life, high temperature quenching to improve hardness. The cutting edge of the drill bit is sharper than before, which can reduce the cutting force, reduce the drilling rate and improve the quality of the hole wall.
【APPLICATION】- Suitable for hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine. Provide fast and precise cuts into stainless steel, sheet metal, cast iron, mild steel, aluminum, plastic,copper and brass.

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