Starrett 79 mm Diameter HSS Drill Bit

Hardened cutting edge (6tpi alternate set) welded to a tough alloy steel body
Bonded construction reduces possibility of shattering
For use with cast iron, tool and stainless, steel, brass, bronze, aluminium, plastics and wood to a depth of 32mm
6.5mm arbor required for hole saw diameters 14 to 30mm and 9.5mm arbor for 32 to 152mm hole saw diameters
Arbors, pilot drills and an ejector spring to aid core removal are also available; see Arbors & Accessories range