Irwin HSS Pro Drill Bits

The Irwin HSS Pro Drill Bit in 8.5mm diameter is supplied individually in a PVC tube, making it ideal for professionals who need single replacement bits or occasional heavy-duty drilling tasks. The 8.5mm diameter is particularly useful for heavy-duty construction, structural metalwork, and creating clearance holes for large fixings across steel and timber materials. Manufactured to DIN 338 standards from high-quality HSS steel, this drill bit features precision ground cutting edges that deliver fast drilling and perfect finishing. The ground flute design ensures maximum accuracy whilst facilitating efficient chip removal, maintaining clean cutting performance during demanding operations. The universal 118° point shape makes it suitable for drilling alloyed and unalloyed steel, non-ferrous metals, cast iron, and plastics.