28mm Bi-Metal Hole Saw, M42 HSS Bi-Metal Hole Saw with Heavy Duty Centering Drill Bit for Iron, Aluminum, Wood, Drywall, Pipe, Fiberboard, Red

【Widely Used】Hole saw is widely used in gypsum board, steel, aluminum, non-ferrous metals, copper, brass, wood, plastic and PVC and other materials. Suitable for bench drill, electromagnetic drill, pistol drill, impact drill, etc.
【Professional quality】Bi-metal saws are made of high-quality M42 high-speed steel, robust and abrasion resistant. High speed steel teeth are heat treated - High hardness (65HRC) - Reusable and durable
【Professional Hole Saw Material】 Our circular drill bit is made of heat treated and blackened carbon steel. It has oil-proof and rust-proof, high hardness, good toughness and durability functions. sharp blade, high hardness, wear during operation, chip and reliable.Metal hole cutter with precision without shaking.
【Intelligent Design】Hole saws for cutting circular holes use spring loaded design promote chip removal, drilling efficiency is higher, with hexagonal handle, closes firmly. With the clean edge design, this hole saw kit is smooth and easy. The spring on the drill automatically pushes the disc out of the saw immediately after completing the hole.
【Swarf Removal Design】Pre-set slotted holes have a beneficial effect on chip evacuation to improve the speed of removing cylindrical iron shavings in the hole