Description: Machifit 4pcs 12mm Lathe Boring Bar Turning Tool Holder with 10pcs Blue Nano DCMT070204 Carbide Inserts and 4pcs Wrench for Lathe Turning Tool.     Specification: Material Holder:alloy steel.  Insert:Carbide.  Machining Process:finishing and semi-finishing.  Inserts:Blue Nano DCMT070204.  Quantity:10pcs/box.     Features: Profiling bar for semi-finishing and finishing operations.  Good toughness and hardness, long service life.  It can reduce the tool grinding cost and improve the cutting efficiency. Good low temperature impact toughness, improved the surface gloss of the cutting pieces.     Inserts Features: (Fit for SDJCR/SDNCN/SDQCR Turning Tool Holder).  1. Blue nano coating, high temperature resistance, better processing.  2. Hardeness up to HRC45, fit for Normal processing stainless steel and ordinary, such as steel 45 steel,A3 steel, stainless steel and other soft materials 201,304.  Also perfect for hardness material.  3. Earn 3-5 times of service life.  4. High grip strength, impact resistance and strong, clear speed advantage in cutting off a large margin and processing.  5. Practical and a variety of processing environments, even in very dirty environments such as cast iron also has good features.     Package Included: 1 x S12M-SDUCR07 Boring Bar.  1 x SDJCR1212H07 Boring Bar.  1 x SDJCL1212H07 Boring Bar.  1 x SDNCN1212H07 Boring Bar.  10 x Blue Nano DCMT070204 Carbide Inserts.  4 x Wrench