Irwin Pro Titanium Nitride Coated Drill Bit

The Irwin IRW10502573 HSS Pro TiN Coated Drill Bits measure 1.5 x 40mm in size and are supplied as a pack of 2. This fine diameter is ideal for precision metalwork applications including small pilot holes, delicate fixings, instrument fabrication, and detailed engineering work where accuracy and control are essential. The 1.5mm diameter offers excellent versatility for fine drilling tasks, whilst the twin-pack format ensures you always have a spare available for critical projects. The Titanium Nitride coating delivers impressive performance improvements with drilling speeds 40-60% faster than conventional HSS bits, particularly valuable in production environments. The 135° split point grinding tip provides perfect centring from first contact, essential for preventing walking and breakage in this delicate diameter. Constructed from premium HSS steel with a 2.5µ TiN coating offering 80 HRC hardness, these drill bits feature exceptional wear resistance. The coating's poor heat conductivity ensures thermal energy is diverted into chips and coolant, reducing power consumption and maintaining cutting performance—critical factors when working with fine diameters where heat build-up can quickly affect drilling efficiency.