Hyamass 3-13mm Step Drill Bit, Double Spiral Flute Step Bits for Metal

Hyamass 3-13mm Step Drill Bit, Double Spiral Flute Step Bits for Metal

• 【Extreme Durability with M35 Cobalt Steel】 Crafted from 5% cobalt HSS-Co, this step drill bit set outperforms standard drill bits with superior heat resistance and a 3x longer lifespan. It enables 20% faster cutting on stainless steel, carbon steel, and hard metals, reducing tool changes for effortless drilling
• 【Versatile 11-Size Drill Bit Set for Metal (3-13mm)】 Cover all needs with 11 precision sizes in one step drill bit for metal kit. Laser-etched markers ensure accuracy for hole creation or enlargement, eliminating bit swapping in DIY or professional projects—perfect as a metal drill bit set for steel
• 【Maximum Efficiency via Dual-Flute Design & Hex Shank】 Double spiral flutes clear metal chips 50% faster than flat bits, while the 1/4" hex shank locks securely for zero slippage. This step bit self-starts on curves and delivers burr-free holes in copper, aluminum, and sheet metal, ideal for metal drill bits
• 【Heavy-Duty Performance for Steel and Hard Metals】 Rigorously tested for 10,000+ rotations without chipping, this drill bit set handles stainless steel, brass, iron, and titanium with pistol or bench drills. Engineered as a drill bits for metal solution, it excels in demanding metal drill bit set for steel applications
• 【Professional-Grade Solution for Metalworkers】 Designed for mechanics and HVAC pros, this step bits for metal set features corrosion-resistant finish and a lifetime rust-proof case. It’s the ultimate drill bits for metal and brocas para metal tool, ensuring reliability in all metal drilling tasks