Premium Cobalt-Titanium Twist Drill Bits for High-Performance Metalworking

Ultra-Durable Cobalt-Titanium Alloy – Engineered with 5% cobalt and titanium coating for extreme hardness (HRC 68-70), resisting heat up to 1100°F. Outlasts standard HSS bits by 3x in stainless steel and cast iron applications.

Precision-Ground 135° Split Point – Self-centering tip eliminates walking for clean starts on curved surfaces. Mirror-polished flutes reduce friction and chip clogging during deep-hole drilling in automotive/industrial projects.

Industrial-Grade Straight Shank – 0.25" hex shank ensures zero slippage in chucks for high-torque drilling rigs or magnetic drill presses. Tolerance: ±0.0005" for consistent bore accuracy in aerospace-grade metals.

Multi-Material Versatility – Specifically optimized for stainless steel (304/316), alloy steel (HRC 40+), titanium sheets, and hardened cast iron. Ideal for metal fabricators, CNC workshops, and DIY automotive modifications.

Oil Groove Technology – Integrated spiral grooves extend bit life by 30% when used with cutting fluids during prolonged drilling of thick metal plates (1/2" to 2" depth).

Certified for Professional Use – DIN 338 compliant with micro-grain structure for vibration-free operation at 3,000+ RPM. Each bit laser-etched with size/angle for quick identification in busy workshops.

Bulk Packaging Efficiency – Ships in crush-resistant plastic cases (100 pieces/case) with moisture-proof coating, minimizing storage space for industrial buyers.

Compatible with magnetic drills, bench presses, and portable drill drivers (recommended feed rate: 0.002-0.006" per revolution for optimal performance).