Bi-metal Hole Saw, 13 PCS Hole Saw Set with 13 Mandrels, 13 Hex Keys and 13 Springs, Ø18-75mm Saw Blade for Drilling Plastic, PVC, Wood, Fiberboard, Soft Metal (Shank Diameter: 10 mm)

General description The Bi-metal Hole Saw Set includes 13 hole saw blades ranging from Ø18 mm to Ø75 mm, along with 13 mandrels, 13 hex keys, and 13 springs. This comprehensive kit is designed for drilling through various materials such as plastic, PVC, wood, fiberboard, and soft metals. Each component is individually packaged to prevent issues with drill bit holders and ensure ease of use. Technical specifications Number of hole saw blades: 13 Diameter range: 18 mm, 20 mm, 22 mm, 25 mm, 28 mm, 30 mm, 35 mm, 38 mm, 45 mm, 50 mm, 55 mm, 65 mm, 75 mm Maximum cutting depth/thickness: 25 mm Shank diameter: 10 mm Material: M42 bi-metal saw band with high-speed carbon steel cutting part Usage Suitable for drilling into metal pipe fittings, aluminum alloys, plastic plates, galvanized pipes, wood, and gypsum boards. Compatible with bench drills, drill presses, pistol drills, and various hand drills. Recommended rotation speed: RPM ≤ 1000 to prevent high-speed wear. Use coolant when drilling metal materials. Start drilling slowly with the center positioning drill. If there are issues with chip removal, stop and clear the chips. Remove the spring of the positioning drill when processing thicknesses exceeding 10 mm. Other information The surface is coated with a thin layer of protective oil to prevent oxidation and rust. Each hole saw kit is fully assorted and individually packaged.