Irwin Pro Titanium Nitride Coated Drill Bit

The Irwin IRW10502597 is a 9mm diameter HSS Pro TiN Coated Drill Bit measuring 9.0 x 125mm in size, supplied individually. This diameter is widely used for M12 bolt clearance holes and heavy-duty metalworking applications, offering excellent capability for drilling thicker steel sections, structural metalwork, and tougher alloys in industrial environments. The 9mm size combined with the substantial 125mm overall length provides excellent depth capacity for demanding applications involving thick materials and stacked metal sections. Enhanced with Titanium Nitride coating, this drill bit achieves impressive speed increases of 40-60% compared to traditional HSS bits, whilst feed rates can be improved by 10-20%. The 135° split point grinding tip delivers perfect centring from initial contact, reducing drilling pressure and eliminating bit walking. Manufactured from high-quality HSS steel with a 2.5µ TiN coating (80 HRC hardness), this drill bit provides exceptional wear resistance even under demanding conditions. The coating's poor heat conductivity ensures thermal energy is diverted into chips and coolant, reducing power consumption and maintaining cutting performance throughout extended use in professional metalworking applications.