【Set Included】: 1 pc of each AL-8, AR-8, E-8, tool holder , 3pcs carbide inserts TCMT32.51 installed on each of these tool holders, 5pcs M4X10 screws and 3 trox key. Shank size: 1/2" 【Premium Holders】: 3 holders are made of high quality 40CrMo,black oxide smooth finish, which are durable, corrosion resistant and has high hardness, wear resistance, good toughness, longer life, bright surface, good shock resistance and good anti-rust performance. The indexable carbide turning tool insert holder set is suitable for varied external turning 【Indexable Carbide Inserts】: Each tool holder comes with 1 piece indexable tin coated carbide inserts, with positive rake cutting angles and built-in chip breakers, which are ideal for general cutting operations.The blades are sturdy, low friction coefficient, wear-proof, stable, sharp and durable 【Wide Applications】: Metal lathe cutting tools are suitable for varied external and internal turning and Semi-finishing, roughing machining of steel and metalwork. 【Package】: Packed with a plastic case for safety storage and protection and easy to carry. GBJ 3pcs 1/2inch Indexable Carbide Lathe Turning Tool holder Mrtal Lathe Cutting Tools withTCMT16T304 TCMT32.51 Carbide Inserts TCMT32.51 Repalcement Carbide Turning Inserts