Ultra-Dex Indexable Boring Bar, Positive, 0.6 in Minimum Bore, 6 in Overall Length, 1/2 in Shank Diameter, Right, SCLPR Toolholder, Insert Compatibility: CPMT 21.51, 80 deg Diamond/Rhombic Insert, 1/4 in Inscribed Circle, MTS-255 Insert Screw, 3/32 in Insert Thickness, Steel, No Through Coolant