Premium HSS-CO Metal Drill Bits Set – 19-Piece Precision Kit

Ultra-Durable HSS-CO5 Steel – Harder than standard HSS, cobalt alloy extends bit lifespan by 300% for stainless steel, cast iron, and hardened metals.

Precision Ground Tips – Laser-calibrated 135° split point design eliminates walking, starts drilling instantly without pilot holes.

Full-Size Range (1.0-10.0mm) – Covers 90% of metalworking needs from electronics repair to automotive fabrication.

Industrial-Grade Finish – Titanium nitride coating reduces friction by 50%, prevents corrosion even in humid workshop environments.

Military-Spec Packaging – Reinforced iron storage case with shockproof foam insert, survives jobsite drops and transport.

Professional Application – Ideal for mechanics, welders, and CNC operators needing burr-free holes in sheet metal, pipes, or angle iron.