13pcs Versailles Hole Saw Drill Bit Set, 16mm-53mm Stainless Steel Tungsten Carbide Cutter For Metal [High quality material] The gears are made of YG8 tungsten carbide steel, and the rigidity varies from the hole saw has a twist drill inside, sharp edge, high strength, high precision, smooth cutting, especially shock resistance and resistance grinder. [Smart Design] 64HRC to 65HRC. Three groups of edges, each blade in the cutting process is responsible for 1/3 of. Sharp gears and low consumption anti-cutting edges make the product have a long service life. [13 different sizes] Outer diameter size: 16mm, 18mm, 20mm, 22mm, 25 mm, 26mm, 28mm, 30mm, 35mm, 40mm, 45mm, 50mm, 53mm [Decorative Hole Drilling] Carbide teeth for fast clean round hole cutting. Suitable for hand-held electric drills, motorized drills and moving tape type magnetism drills. [Use for] fast and accurate hole cuts in stainless steel, mild steel, iron, copper and brass. Can drill about 20mm deep for wood and drill about 5mm deep for stainless steel. workload and inside each edge also has a cutting edge, also due to the edge. Features of the boring saw set: Each edge is part of the characteristics of the cutting work, so that the hole is not easy to create the appearance of a collapse. Drilling of stainless steel plates, steel, castings, aluminum alloys , iron and other metal plates, chip evacuation, excellent performance, sharp edge, wear-resistant. Hole saw drill bit Three groups of edges, each blade in the cutting process is responsible for 1/3 of the workload, and inside each edge also has a cutting edge, also due to the edge, each the load on the properties of a part of the work cutting, do hole drilling is not easy, to create the appearance of edge breaking. Specification: Material: alloy Size outer diameter: 16mm, 18mm, 20mm, 22mm, 25mm, 26mm, 28mm, 30mm, 35mm, 40mm, 45mm, 50mm, 53mm Size chuck diameter: 10 mm Application: Can be used for bench drills and electric drill chucks with machine tools Note: This product is not easy to cut relatively thin metal material, can cut within 2-5mm Stainless steel plate and metal plate 15mm