HSS 4-32 mm Cobalt M35 Step Drill Bit with Helical Groove, Pagoda Reamer, Triangular Handle, HSS Co Drill Bit, DC17B

Much harder – M35 HSS is much harder than HSS 4241, suitable for drilling stainless steel and steel plates, iron plates, aluminum, and wood.

Good design: the triangular shank fits securely into the power tool chuck and eliminates slippage; The dual-flute design clears chips more quickly and allows particles to escape easily. The single-stage step drill bit meets all your requirements. This M35 HSS step drill bit is available in 4-32 mm sizes with 15 step sizes: 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 24 mm, 26 mm, 28 mm, 30 mm, and 32 mm. The slotted tip increases drilling speed. It can automatically deburr holes during drilling to keep the drill bit clean. You can use water to cool it down while it's working, extending its lifespan.