M35 Spiral Flute Step Drill Bit Set (3 Pcs, 30 Sizes) - 1/4 Shank for Metal, Wood, Aluminum, and Plastic

About this item

• 【100 extra-long warranty period】：If you have any questions about the product, please contact us and we will answer you within 12 hours. If the hexagonal handle breaks, refund or replace for 100% .
• 【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 resistance, high pressure resistance and sintering resistance. Ideal for steel and plastic drilling with high-speed cordless drills.
• 【M35 four spiral groove】: Step drill bit for metal four cutting blade design. Faster, smoother cutting and easier separation of sawdust.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.
• 【30 Sizes :Including】:Step bit 1/8”-1” 9 Sizes，1/4" - 1-1/8” 15 Sizes，3/16”-1/2” 6 Sizes，step bits For your everyday DIY needs.
• 【Unibit step drill bit compatibility 】：Unibit step drill bit 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).
• 【TiAlN】: TiAlN is a recently developed coating material.
• It is known for its industrial-grade durability and longevity.
• The coating has high hardness and oxidation temperature as well as good thermal hardness.
• It also has strong adhesion, low friction coefficient, and low thermal conductivity coefficient.