Irwin HSS Pro Drill Bits

The Irwin HSS Pro Drill Bit in 3.5mm diameter comes in a bulk pack of 10, offering excellent value for trade professionals working with this frequently used mid-range size. The 3.5mm diameter is particularly suited to general construction work, metalworking applications, and creating clearance holes for standard screws and bolts. Manufactured from high-quality HSS steel, this drill bit delivers consistent performance throughout its working life. The precision ground cutting edges provide fast drilling with perfect finishing, whilst the ground flute design ensures maximum accuracy and promotes fast chip removal, maintaining clean cutting performance.