KYOCERA Boring Bar, Excellent Multi-Use Positive Rake, Series: DYNB, 0.58 in Minimum Bore, 0.945 in Maximum Bore Depth, 6 in Overall Length, 1/2 in Shank Diameter, Round Shank, Right Hand of Holder, A...STLP-AE Toolholder, Insert Compatibility: TPMX22…/TPMT22…/TPGH22…/TPET22…/TPGB22.../TPMH22…, 60 deg Triangle Insert, 1/4 in Inscribed Circle, 1/8 in Insert Thickness, Steel, Through Coolant: Yes