Premium Cobalt Steel Drill Bit Set

Experience superior performance with our premium M42 8% cobalt steel drill bits, designed for exceptional heat, wear, and chip resistance. With a Rockwell hardness scale rating of 68-70 HRC, these drill bits ensure long tool life and reliability.

Key Features:

• Advanced Material: Crafted from premium M42 cobalt steel for enhanced durability.
• High Hardness: Achieves a hardness rating of 68-70 HRC for optimal performance.
• Efficient Cutting: 3-step design allows for effortless cutting through stainless steel, hard metals, aluminum, and plastic.
• Speed Advantage: Capable of running three to five times faster than standard drill bits.
• Cost-Effective: Despite a higher initial price, the cost per hole is significantly lower due to increased longevity and efficiency.
• Sharp Edges: Sufficiently sharp bit edges cut materials into long strips rather than grinding through them, ensuring cleaner results.

Set Includes:

This comprehensive set features 19 pieces of 135-degree split point drill bits in various sizes:

• 1mm (length: 3.4cm)
• 1.5mm
• 2mm
• 2.5mm
• 3mm
• 3.5mm
• 4mm
• 4.5mm
• 5mm (length: 8.5cm)
• 5.5mm
• 6mm (length: 9cm)
• 6.5mm
• 7mm
• 7.5mm
• 8mm (length: 11.5cm)