Four Spiral Flute M35 Cobalt Step Drill Bit Set 1/8"-7/8"(3pcs),Impact Ready Four Flute Step Drill Bit, 1/4" Hex Shank Step Bits for Drilling Metal, Stainless Steel, Aluminum, Wood, Plastic

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About This ✅【M35 Cobalt Superhard High Speed Steel】: ISI M35/1.3243/SKH55/M35 steel is a kind of high speed steel containing cobalt, which has the characteristics of high wear resi stance, high pressure resistance and sintering resistance. ✅【Four groove step drill】: The ordinary step drill is easy to flex during the cutting process, but the four groove step drill is more stable in the cutting. The service life is twice that of ordinary ladder drills, the drilling accuracy is significantly improved, the cutting speed is faster when drilling, and it has a unique effect on stainless steel drilling. ✅【M35 step drill compatibility 】： step drills can quickly and smoothly drill holes of different diameters, such as stainless steel, aluminum, wood, plastic board (the board must be thinner than the height of the step drill) ✅【34 Sizes :Including】:1/8"-1/2" 13 Sizes，1/4"-3/4" 9 Sizes，3/16" - 7/8" 12 Sizes. ✅【M35 four spiral groove】: step drill four cutting blade design. Faster, smoother cutting and easier separation of sawdust. ✅【M35 high speed steel with cobalt】: high hardness (HRC67-70) , high red hardness (625 ° C, 4H, HRC63-65) , wear resistance, toughness and bending strength are not lower than ordinary high speed steel, M35 high speed steel is characterized by general cutting with CO, quenching hardness is 1200-1240c. Overview Material : Cobalt Steel Finish Type : Aluminum Shank Type : Hex Cutting Angle String : 135 Degrees Brand : PANOVOS Show more