15 Piece HSS Cobalt Drill Bit Set

The Irwin 15 Piece HSS Cobalt Drill Bit Set is a professional-grade drilling solution designed specifically for working with stainless steel and other high alloys. This comprehensive set delivers the enhanced performance and durability required for demanding metalworking applications. Each drill bit in this set is manufactured from high-quality HSS steel containing 5% cobalt, which significantly improves heat resistance and extends tool life when drilling harder materials. The 135° split point grinding ensures perfect centring on the workpiece whilst reducing the drilling pressure required, making these bits ideal for precision work on metal fabrication projects. The industrial quality ground flute design provides excellent chip evacuation and maintains drilling accuracy even under sustained use. The attractive golden tempered surface finish not only identifies these as cobalt bits but also indicates the heat treatment process that contributes to their superior performance characteristics. This 15-piece set provides comprehensive coverage for a wide range of drilling tasks, containing the following sizes: 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 8, 9, 10mm.

Features and Benefits:

• 5% cobalt content delivers superior heat resistance and extended tool life
• 135° split point ensures accurate centring and reduced drilling pressure
• Industrial ground flute design for fast chip removal and high accuracy
• Golden tempered finish indicates quality heat treatment
• Suitable for drilling stainless steel and high alloy materials

Specifications: Type: Cobalt HSS No. Pieces: 15