M42 HSS Hole Saw, 130mm Bi-Metal Hole Opener Cutter Drill Bit for Wood Aluminum Steel Plastic

Specification: Cutting Diameter: 130mm/5.1" Shank Diameter: 9mm/0.39" Length: 95mm/3.74" Depth: 37mm/1.45" Material: M42 Bi-Metal Color: Red Weight: 729g Features: 1. Sharp teeth, low vibration, fast balance when opening, making operation more stable. 2. Universal handle type, effectively preventing slippage during work, can carry more torque. 3. Equipped with special holes for chip removal, which greatly improves the speed of removing cylindrical iron filings in the hole. Usage Suggestion: Hole saw may become overheated and get damaged or even burned up due to fast rotary friction, ought to use cutting fluid to keep the hole saw cold during processing. Keep the drill be stable when drilling, otherwise the centre bit may get snapped due to excessive shaking. Start drilling with a slow drill rotary speed, or the centre bit may be shattered on first use.  The larger the hole saw is, the slower the drill rotary speed should be, this way can protect the centre bit from getting snapped. Package Included: 1 x 130mm M42 Hole Saw