Irwin 10502556 HSS Cobalt Drill Bit

This Irwin HSS Cobalt Drill Bit is designed for drilling through tough metals and hard materials. It features a 5.5 mm diameter, with a working length of 57 mm and an overall length of 93 mm. The drill bit body uses a cobalt alloy containing 5% cobalt to improve red hardness and durability, while a special surface treatment enhances longevity and cutting efficiency. A 135° split point contributes to precise centering and reduced drilling pressure, supporting high-precision drilling in stainless steel, high alloys, and similar materials. The bit is compatible with standard drill chucks and is suitable for metal drilling applications across a range of demanding tasks.

Features

• Diameter: 5.5 mm
• Working length: 57 mm
• Overall length: 93 mm
• 5% cobalt alloy for heat resistance
• 135° split point for centering and reduced pressure
• Golden tempered surface finish resists rust

Technical specifications

• Material: Cobalt alloy with 5% cobalt
• Type: HSS cobalt drill bit
• Surface: Special surface treatment for durability
• Compatible with standard drill chucks
• Applications: drilling tough metals and stainless steel