KYOCERA Boring Bar, Imperial Multi-Use Negative Rake, Series: Double Clamp, 1-1/4 in Minimum Bore, 1.5748 in Maximum Bore Depth, 12 in Overall Length, 1 in Shank Diameter, Round Shank, Right Hand of Holder, A...DCLN Toolholder, Insert Compatibility: CNMG43.../CNMM43.../CNGG43.../CNMA43.../CNGA43..., 80 deg Diamond/Rhombic Insert, 1/2 in Inscribed Circle, 3/16 in Insert Thickness, Steel, Yes Through Coolant