Double-sided 55° rhombic insert, used for semi-finishing and finishing applications. Low cutting forces due to very sharp edge and positive rake. A hard submicron grain size substrate with PVD coating and a special SUMOTEC surface treatment. Suitable for machining steels, alloy steels, austenitic stainless steel, high temperature alloys and hard steels at moderate to relatively high cutting speeds under stable conditions. Features high wear resistance and plastic deformation durability.