Hole saw set, 5-piece cobalt HSS hole saw 16/18.5/20/25/30 mm, high-speed steel hole saw alloy, steel, stainless steel, suitable for wood, plastic, metal

【SUPER MATERIAL】FLINTRONIC HSS high-speed steel hole saw is made of high-speed steel, which is highly hard and wear-resistant. After high-density grinding and high-quality heat treatment, it features high strength and precision for smooth cutting. 5-piece hole saw set: 16 mm, 18 mm, 5 mm, 20 mm, 25 mm/1 inch, 30 mm/1.2 inch; length: 65 mm/2.55 inch, diameter: 9 mm/0.35 inch; 5 pieces of hole cutters are individually packaged in a plastic box, each comes with its own Allen key for removing the pilot bit, and the bit can also be unscrewed from the shank. 【HIGH EFFICIENCY】: Cuts quickly with sharp, high-hardness blades. In just a few minutes, the HSS hole saw set cuts precise holes in laminates made of steel, stainless steel, iron, copper, brass, etc., aluminum, fiberglass, Formica, etc. 【INTELLIGENT DESIGN】The hole cutters feature a spring-loaded design, which is perfect for chip removal and increases drilling efficiency. Importantly, the handle adopts a hexagonal design, which makes the drill more stable and can completely avoid the problem of slipping during use. 【WIDE APPLICATION】The hole saws are designed for thinner steel drill bits. They can be perfectly installed on locks, door and cabinet knobs, or larger diameter holes. They are also suitable for bench drills, electromagnetic drills, pistol drills, and impact drills. They are also suitable for stainless steel plates, square tubes, iron, cast iron, wood, etc.