Libraton M35 Cobalt Step Drill Bit 1/4"-3/4", Four Spiral Flute Unibit

4-Flute Turbo-Cutting System: Engineered with a specialized quad-spiral groove design, this step bit provides 40% faster chip evacuation than standard 2-flute competitors. The optimized geometry prevents material buildup and eliminates jams for a smoother drilling experience.

Military-Grade M35 Cobalt Core: Forged from high-speed steel with 5% Cobalt alloy, this bit is built to withstand extreme heat up to 1,450°F. It delivers 3X the lifespan of conventional HSS bits, making it the ultimate tool for hardened steel, copper alloys, and carbon fiber.

Nano-AlTiN Armor Coating: Features a premium Aluminum Titanium Nitride (AlTiN) coating with a surface hardness of 89HRC. With a low 0.45 friction coefficient, it significantly outlasts TiN-coated bits, especially during high-speed metalwork.

High-Torque 1/4" Hex Shank: Equipped with a standard 1/4-inch hex shank for instant compatibility with impact drivers and power drills. The integrated anti-slip grooves ensure a secure grip, preventing chuck slippage even under a high torque of 35N·m.

9 Precision Step Sizes: A single bit covers 9 essential diameters: 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", and 3/4". Each step is clearly marked for accurate hole enlarging.

Convenient Storage Holder: Comes with a dedicated storage holder, ensuring the precision cutting edges stay protected and organized in your toolbox.