Version: With relief ground knuckle profile. Centre cutting edge geometry for plunging. General-purpose end mills for peripheral or vertical milling (plunging) and subsequent lateral operations. Advantage: Compared to multi-flute cutters better swarf evacuation due to wider chip space. Application: Suitable for: • 28 m/min cutting speed (vc) in general structural steels up to 500 N/mm2. • 23 m/min cutting speed (vc) in unalloyed quenched and tempered steels up to 750 N/mm2, unalloyed case-hardening steels up to 750 N/mm2, nitriding steels up to 750 N/mm2. • Free cutting steels, free cutting stainless steels, aluminium and non-ferrous metals. • Applicable with emulsion with at least 4 % grease content (for tapping at least 8 %).