Cobalt Steel Step Drill Bit Set - 5PCS 50 Sizes for Metal, Impact-Ready Step Bits for Steel with Titanium Coating & Aluminum Case | Professional Metal Drill Bit Kit(5pc)

ProVault Verified independent store

→

About This Supercharged Cobalt Steel Construction Baigao’s step drill bits are forged from premium cobalt steel (M42 grade), delivering 68% higher heat resistance and 2X lifespan v s. titanium-coated rivals. The titanium nitride coating reduces friction by 40%, letting these step bits for metal slice through stainless steel, cast iron, and hardened alloys like butter—no more burnt bits or failed projects! Laser-Calibrated Steps & 118° Spear Tip Precision meets power! Each unibit step drill bit features 50 laser-etched sizes (1/4"-1-3/8") and a 118° self-centering tip that eliminates "bit walking"on curved surfaces. Four slots design clears metal chips 50% faster, preventing clogging in automotive sheet metal or aluminum siding. Whether you’re installing electrical conduits or crafting metal art, this step drill bit for metal delivers burr-free holes in seconds. Hex shank grips any chuck—even impact drivers! Industrial-Grade Impact Resistance Built for the toughest jobs! These step bits for metal are hardened to 68 HRC and engineered for high-torque impact drills. Tested on 1/4" steel plates at 3,500 RPM, they outperformed 92% of competitors in vibration resistance. The reinforced step geometry prevents chipping when punching through truck frames or steel studs. As a true impact drill bit set, it’s trusted by welders and fabrication shops—no more snapped bits mid-proj 30 Sizes, 1 Game-Changing Set Ditch the drawer full of single-use bits! This metal drill bit set for steel packs 30 sizes into just 5 compact step drill bits, covering 90% of metalworking tasks. Drill pilot holes (3mm) to large conduit passes (35mm) without swapping tools—perfect for tight spaces like car engines or rooftop installations. Baigao’s step drill bit set ships in a CNC-machined aluminum case with shock-absorbing foam. Survives 10-foot drops and repels moisture in humid garages or rainy jobsites. Weighs 40% less than steel boxes—throw it in your truck bed without guilt! Every set includes our "No-Questions-Asked" lifetime warranty: if your step drill bit ever fails, we replace it FREE. Because pros demand reliability. Overview Material : Cobalt Steel Finish Type : Titanium Aluminum Nitride Shank Type : Hex Brand : Baigao Tool Flute Type : Spiral Show more