M35 Cobalt Step Drill Bit 1/4 to 1-3 / 8in | 4 Flute Spiral Groove for Metal/Wood/Plastic | 89HRC Hardness & Efficient Cutting | Includes Storage Box

Produktbeschreibung

Accurate Spiral Flutes - Step drill bit features 4 polished spiral grooves that cut through metal like butter, delivering smoother cuts 30% more efficiently than standard bits. Ideal for stainless steel and aluminum sheets. M35 Cobalt Super Alloy - High-speed steel step drill contains 8% cobalt for extreme heat tolerance (89HRC hardness), outlasting carbon steel bits by 5x when drilling tough materials like copper or hardwood. Multi-Material Mastery - Step drill bit imperial handles 7+ materials from 1/4in to 1‑3/8in diameters. Use for electrical conduits, HVAC ducts, or DIY projects with plastic/wood - no bit changes needed. Workshop-Ready Organization - Spiral groove step drill comes in a sturdy storage box that prevents damage and loss. The 1/4in shank fits all standard chucks for prompt setup. No-Slip Performance Assurance - Our cobalt step drill bit maintains effectiveness through 100+ uses on hardened steel. Marketplace-backed 90-day replacement if your bit chips or dulls prematurely.