HSS · Nano-coated · DIN 335 C · 3 cutters · Countersink angle 90° · Shank with 3 clamping areas from nominal Ø 8.3 mm · Right-hand cutting · Variable rear grinding · For the processing of steel, rust- and heat-resistant steels, aluminium, brass and plastics · Advantages : · Significantly less feeding force required · Up to 60 % higher service lives · Up to 30 % faster lowering · Extremely quiet running · Optimised countersink · Very high resistance to wear and heat hardness Through especially developed chip space parameters, variably running rear grinding and special nano-coating Further technical information: · Feed in steel up to 800 N: 0,15mm/rev