Hole Saw Set, 5PCS HSS Cobalt Hole Saw Ø16/18.5/20/25/30mm, High Speed Steel Hole Saw Alloy, Steel, Stainless Steel, Suitable for Wood, Plastic, Metal

【SUPER MATERIAL】HSS high speed steel hole saw made of high speed steel, which has high hardness and wear resistance. After high-density grinding and high-end heat treatment, it has high strength and precision to perform cutting smoothly. 【5 PIECE HOLE SAW SET】16mm/0.6in, 18.5mm/0.7in, 20mm/0.8in, 25mm/1in, 30mm/1.2in; Length: 65mm/2.55inch, Diameter: 8mm8; 5 pieces The hole cutters are individually packaged in a plastic box, all come with their own Allen key to remove the pilot bit and the bit also unscrews from the shank. 【HIGH EFFICIENCY】: Cutting quickly, with sharp blades and high hardness, in just a few minutes, the HSS hole saw kit cuts holes precisely in laminates of steel, stainless steel, iron, copper, brass, aluminum, fiberglass, formica, etc.【INTELLIGENT DESIGN】The hole cutters use spring loaded design which is perfect for chip removal, drilling efficiency is higher. The important thing is that the handle adopts the hexagonal design, which makes the drill more stable, could totally avoid the slipping problem when we use it. 【WIDE APPLICATION】Hole saws are designed for thinner steel drill bits. They can be perfectly installed on locks, knobs on doors and cabinets or larger diameter holes. It is also suitable for bench drills, electromagnetic drills, pistol drills and impact drills. It is also suitable for stainless steel plates, square tubes, iron, cast iron, wood etc. Product description High-speed HSS hole saw - your high-performance life assistant. Top quality materials.High speed steel hole saw thanks to special heat treatment, sharp edge, high strength. High strength, high precision. Its safe and premium material you don't need to worry about product quality or health issues. Specifications: Material: HSS6542. Hardness: HRC 65. Surface treatment: titanium coating. Type: hole saw. Hole saw diameter: 16mm, 18.5mm, 20mm, 25mm, 30mm. Stem diameter: 8mm. Hole saw blade length: 65 mm. Package weight: 308g. Application: Widely used in bench drills and electric drill chucks for machine tools, etc. Warning and precautions: 1. Use oil or water to lower the temperature before drilling hard materials (such as steel, stainless steel, etc.). Otherwise, the drill bit may be broken at high temperature. 2.Wear protective glasses to protect your eyes, please wear a protective mask when working upwards. 3. Please wear the earplugs when you need to work for a long time, to reduce the impact of noise. 4. Remove the anti-rust oil after use for longer life. 5. Please choose a lower speed when continuous cutting. 6. Please do not let the edge of the hole saw make violent or strong impact when cutting, so as to avoid the blades breaking. 7. Please use coolant when working on hard materials. 8. There may be a slight difference in weight and