M42 Cobalt Twist Drill Bits 12mm (2PCS) – 8% Cobalt Steel Metal Drill Set for Stainless Steel, Hard Metal, Aluminium & Plastic – 135° Split Point High-Speed Industrial Grade Drill Bits

M42 COBALT TWIST DRILL BITS 12MM (2PCS)

High-performance M42 8% cobalt twist drill bits engineered for industrial-grade drilling power, designed specifically for stainless steel, hardened metals, aluminium, plastic, and tough alloys. Manufactured with premium 68–70 HRC cobalt steel, these drill bits deliver exceptional heat resistance, wear resistance, and long operational life, making them ideal for professional workshops and heavy-duty DIY applications.

Featuring a precision 135° split point tip, these drill bits ensure fast, accurate starts without walking or slipping. The advanced spiral flute design efficiently removes metal chips, reducing friction and heat build-up for smoother, faster cutting performance.

Built for durability and efficiency, these cobalt drill bits operate up to 3–5 times faster than standard HSS bits, delivering lower cost per hole and extended tool life even under extreme conditions. Whether you are working on metal fabrication, automotive repair, construction, or engineering tasks, this 2-piece set guarantees reliable, high-speed drilling every time.

KEY BENEFITS & FEATURES

• PREMIUM M42 COBALT STEEL – Crafted with 8% cobalt content for superior hardness, durability, and extended tool life
• HIGH HEAT RESISTANCE – Withstands extreme drilling temperatures up to 860–880°C without losing hardness
• 68–70 HRC HARDNESS RATING – Ensures excellent wear resistance and long-lasting cutting performance
• 135° SPLIT POINT DESIGN – Provides precise starting, reduces walking, and improves drilling accuracy
• FAST CUTTING PERFORMANCE – Drills 3–5 times faster than standard HSS drill bits
• SPIRAL FLUTE DESIGN – Efficient chip removal for smoother and cooler operation
• VERSATILE MATERIAL USE – Ideal for stainless steel, hardened steel, aluminium, plastic, and wood
• HIGH DURABILITY PERFORMANCE – Maintains sharp cutting edge even under continuous heavy-duty use
• STRAIGHT SHANK DESIGN – Compatible with most standard drill machines and power tools
• PROFESSIONAL INDUSTRIAL QUALITY – Suitable for workshop, engineering, and construction applications

WHAT’S INCLUDED

• 2 x M42 Cobalt Twist Drill Bits 12mm (Length: 15.1cm each)
• 1 x Protective Storage Packaging Sleeve
• User Handling Guidance (Basic Usage Recommendation)