M35 Cobalt Step Drill Bit Set with Center Punch, TiAlN Coated Unibit(1/4-1-3/8), 4 Spiral Flute Hex Shank for Stainless Steel, Metal, Wood, Plastic

Complete Industrial Sizing System£ºComprehensive set includes 13-step (1/8-1/2) great for electronics enclosures, 12-step£¨3/16 to 7/8£©suitable for combination of range and density, 9-step (1/4-3/4) for machinery assembly and oversize 4-step (up to 1-3/8) for industrial equipment.
Industrial-Grade Durability£ºEngineered with premium M35 high-speed steel, our unibit step drill bits withstand rigorous factory production line use. Proven to maintain peak performance through 8+ hours of continuous drilling on hardened steel, stainless steel, and industrial metal sheets - reducing downtime for tool replacement.