The “TCMT” is a cutting tipped tool, T for triangular 7 degrees positive flank tool for half-finish and finish turning. C stands for chip breaking in moderate feed range, positive rake, and little cutting forces. M stands for tolerance range and G is hole or chip breaker. TCMT tool is used for cutting wide range of materials, including soft and different alloys. They are generally made from Carbide substrate, designed for high cutting speeds.