Presto Hi-Nox HSS Drill Bit 8.5mm Tapping Drill

8.5mm diameter tapping drill size for 10mm standard taps.
Hi Nox Jobber Length Drills (DIN 338)

Total length 117mm

Cutting length 75mm

Short fluted jobber drill to give more strength. To be used in Austenitic Stainless Steel, in sheet metal with work hardened surface, and steels with galvanised surface coating. Particularly used in hand machines, where centering is a problem.