YBC252 Comprising of thick TiCN and thick Al2O3 coatings, the grade has high capability against plastic deformation and good hardness of cutting edge. It is preferred grade for machining of steel from finishing to roughing. Under the same cutting conditions, the cutting speed can be increased by more than 25%, while the tool life can be 30% longer under the same cutting speed. CCMT09T308-HM The CCMT stands for the blade series, 09 stands for the size and shape of the blade, and T308 stands for the cutting material of the blade. HM stands for chipbreaker. The blade is usually made of cemented carbide (Carbide), which has good hardness and wear resistance, and is suitable for high-speed cutting. CCMT09T308 inserts are often used in turning processes, and are suitable for roughing, semi-finishing and finishing of metal materials. It can be used to process workpieces of various hardness and materials..1. Blade size: The blade size is 09, here 09 represents the size parameters such as the length. 2.Uses: CCMT09T308 inserts are often used in turning processes, and are suitable for roughing, semi-finishing and finishing of metal materials. 3.HM Chipbreaker for semi-finishing with wide application with M-level tolerance, it is suitable for internal and external semi-finishing of materials like steel, cast iron, etc. 4.Please note that specific product information (such as insert size, cutting material, coating, etc.) may vary between different suppliers or manufacturers. Before purchasing or using any inserts, read and follow the exact specifications and instructions provided by the manufacturer