High MaterialThe hole saw kit made of premium HSS carbon steel and bimetal steel with sharp edges and high hardness. Strong and sturdy. The precision of the concentric degree, allowing the teeth to uniform edge to extend the life of the hole.Cutting Design: The metal hole saw with a no-commitment design with clean edges cuts smoothly and easily. And the spring on the drill automatically pushes the saw disc immediately after finishing the hole.Sharp Teeth: The high speed steel drill bit kit provides impact resistant teeth and resists tooth abrasion. The tooth shape is sharp, the vibration is small, and can be quickly compensated when opening the hole, making the operation more stable.Easy chip removal The newly developed chip removal groove, the kit of metal drill bits can quickly unload the space, improve the speed when removing cylindrical iron shavings in the hole, and will not cause the phenomenon of cracking and stuck partsWide Application The power socket box drill bit for cut mild steel, stainless steel, cast iron, brass, aluminum, wood, etc., ideal for installing locks, knobs in doors and cabinets or drilling larger diameter holes through offices, etc., room decoration necessary tools.Product M42 hole saw, 100% brand new and high quality, the edge of the saw blade is not easy to fall off, is strong and sturdy, sharp cutting and presents an excellent finish. The heat-treated bimetal M42 saw band is used as the material. The woodworking hole cutter has two functions, wider application materials, more uniform chip evacuation and faster cutting speed. Compared with ordinary variable tooth openers, the service life is extended by 30% and the vibration is low. The work is more stable, more durable and has a wide range of cutting diameters. Contents: 1 hole saw. 1 twist drill bit.