Product: High Speed Steel Gear Cutters For MetalMaterial: High Speed Steel,Website:http://www.chinabettool.com, HSSType: Standard, Non-standardProduct Description:It is used to process the groove of gear.High speed steel is a high hardness steel, it has good wear resistance and heat resistance.HSS has good combination of strength and toughness, it is suitable to produce cutting tools.In recent years, powder metallurgy HSS is widely used in the world, this kind of material can be longer service life.