QWORK Hole Saw Set of 5 Ø16/18.5/20/25/30 mm HSS Hole Saw for Steel, Stainless Steel, Suitable for Wood, Plastic, Metal

Material The hole saws are made of super hard tungsten steel with nickel-plated coating to resist corrosion, after high-density grinding and high-end heat treatment. With high hardness, good toughness, high concentricity. Spring loaded design: the spring design helps to remove chips, making drilling more efficient; The edge of the tooth formed by CNC at a given time has great sharpness. Bits cut precisely, improve overall concentricity and surface smoothness. Application Hole saws apply to bench drills, magnetic drills, pistol drills, impact drills, etc. For stainless steel plate, square tube, iron, cast iron, wood, F.R.P and other general sheet metal. Caution: When cutting hard materials, be sure to keep the tool cool to avoid damage to the material to be drilled and premature wear of the tool.