General description The Bimetal Hole Saw Set includes 13 hole saw blades and 39 accessories, featuring 13 mandrels, 13 drill bits, and 1 storage box. Each kit is fully assorted and individually packaged to prevent issues with drill holder removal after using a specific saw blade size. The high-performance hole saws are made from heat-treated M42 bimetal, ensuring durability and longevity. Technical specifications Number of hole saw blades: 13 Diameter range: Ø18-75 mm Maximum cutting depth/thickness: 25 mm RPM: ≤ 1000 Usage The hole saw set is suitable for a variety of materials including metal pipe fittings (steel, castings, aluminum alloys), plastic plates, galvanized pipes, fire hoses, wood, and gypsum board. It can be used with bench drills, drill presses, pistol drills, and various hand drills. For optimal performance, control the rotation speed during use. Other information The saw tooth features an arc design for concentric precision and uniform tooth edge, enhancing impact