AWTOOLS Cobalt Metal Drill Bit Set 19 Pieces 1.0-10.0mm HSS-Co M35 DIN 338

In a busy metalworking shop, a technician reaches for the AWTOOLS 19-piece cobalt drill bit set to bore precise holes through a stainless steel bracket. The high-speed steel with 5% cobalt (M35) ensures the bits stay sharp and resist heat, even during continuous drilling. Each bit features a 135° split point that self-centers without a pilot hole, reducing walking and improving accuracy. The set covers diameters from 1.0 mm to 10.0 mm in 0.5 mm increments, providing a bit for nearly every metal drilling task. The bits are fully ground to DIN 338 standards, ensuring consistent quality and a bright finish that resists corrosion. The sturdy metal case keeps the bits organized and protected, making it easy to carry to any job site.

Key specifications

• Material: HSS-Co (High-Speed Steel with Cobalt), 5% cobalt content (M35 grade)
• Set includes 19 bits: 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0 mm
• Shank type: Cylindrical (straight shank), standard DIN 338
• Point angle: 135° split point for self-centering and reduced thrust
• Manufacturing process: Fully ground for precision and durability
• Flute type: Spiral flute for efficient chip removal
• Surface finish: Bright finish, tolerance class h8
• Storage case: Metal case for protection and organization

Why choose it

The cobalt alloy provides excellent heat resistance and wear resistance, allowing the bits to maintain hardness at high temperatures. The 135° split point eliminates the need for center punching and reduces walking, ensuring accurate hole placement. The comprehensive size range covers most common metal drilling needs, from small pilot holes to larger clearance holes. The metal case keeps the bits organized and protected, extending their lifespan.

Ideal use cases

• Drilling in metal, stainless steel, cast iron, acid-resistant steel, and hardened steel
• Professional use in workshops, manufacturing, and maintenance
• DIY projects requiring precise metal drilling
• Compatible with corded drills, cordless drills, and drill presses

Good to know

For best results, use cutting fluid when drilling hard metals and reduce speed for larger diameters. The bits are suitable for a wide range of metalworking applications and are built to last with proper care.