3mm Uncoated HSS Power Metal 4 Flute End Mill Short Length With Weldon Shank HSS Powder Metal Substrate for increased tool life over plain HSS high speed steel or 8% cobalt milling cutters. Suitable for CNC or MANUAL machining Uncoated bright finish, ideal for mild or soft steels and non-ferrous metals 4 flute non-centre cutting end mill for side cutting / end milling only Weldon shank, suitable for clamping in side lock arbour or ER collet chuck