Negative 5° End Cutting Edge Angle 25for 7° positive 80°: Diamond inserts. Precision finishing operation. For steel and stainless steel. Sharp cutting edge. Good chip control. Set Includes: 3 Boring Bars (S06H-SCLCR-2, S08K-SCLCR-2, S10M-SCLCR-2), 10 Inserts: (CCMT-21.51, UF-DHCP25), 1 Torx Key: T-7, Fitted in a Storage Box.