Bi-metal hole saw (M42 HSS) - Robust for wood, aluminum, iron, and plastic, 100mm

[HEAT-TREATED HSS M42 BIM METAL CUTTER]: Made of high-quality HSS carbon steel and bimetal steel with sharp edges and high hardness. Strong and robust. The precise concentricity ensures uniform tooth edges, extending the hole's lifespan. [CUTTING DESIGN]: 25mm cutting depth. With its clean, non-binding edge design, this hole saw cuts easily and smoothly. The spring on the drill tip automatically pushes the disc out of the saw immediately after the hole is finished. [EQUIPPED WITH A 93mm CENTER SHAFT]: For your convenience, we have included a 93mm center shank. [APPLICATION]: Suitable for pistol drills, pillar drills, vertical drills, etc. Widely used for drilling holes in slabs, domestic timber, galvanized pipes, fire hoses, plastics, drywall, and other opening applications.