Irwin HSS Pro Drill Bits

The Irwin HSS Pro Drill Bit in 5.5mm diameter comes in a bulk pack of 10, offering excellent value for trade professionals working with this popular mid-range size. The 5.5mm diameter is particularly suited to general fabrication, construction work, and creating clearance holes for medium fixings across steel, timber, and plastic materials. Featuring high-quality HSS steel construction, this drill bit is designed to withstand regular professional use. The precision ground cutting edges deliver fast drilling with perfect finishing, whilst the ground flute design ensures maximum accuracy and promotes fast chip removal, maintaining clean cutting performance throughout the drilling process.