M35 Four Spiral Flute Cobalt Step Drill Bit Set 1/8"-7/8", Industrial Grade Wear-Resistant TiAlN Coated 1/4" Hex Shank Step Bit for Metal, Stainless Steel, Aluminum, Wood, Plastic (3pcs)

HSS Titanium Coating: Our high-speed steel drill bits, fortified with a titanium coating that makes the drill bit harder than a typical HSS bit, can reduce the friction drill, and perform well in heat, corrosion, and rust resistance.
Unique Design - The tip bifurcates at 118 degrees for added wear resistance. The two-groove design provides a smoother cut, allowing material particles to escape easily for a cleaner drilling operation.
Meet Your Needs - With the step drill bits we offer, you can machine holes of different diameters. Ideal for plastic/wood/board/soft rubber with low hardness countersinks. Suitable for home DIY and general construction/engineering use.
Safety and Stability - Caters to most pistols on the market to prevent slipping and falling off during rotation to increase safety in use.
28 Step Sizes - 6-step drill（3/16"，1/4"，5/16"，3/8"，7/16"，1/2"），9-step drill（1/4"，5/16"，3/8"，7/16"，1/2"，9/16"，5/8"，11/16"，3/4"），13-step drill（1/8"，5/32"，3/16"，7/32"，1/4"，9/32"，5/16"，11/32"，3/8"，13/32"，7/16"，15/32"，1/2"）

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