Indexable Boring Bar, TPBN06-2, 5 in L, High Speed Steel, Triangle Insert ShapeMfr # 73310155658 Item Indexable Boring Bar Min. Bore 0. 43" Cutting Direction Right Hand Insert Shape Triangle Material Steel Shank Material High Speed Steel Style TPBN06 2 ANSI Code TPBN06 2 Lead Angle 0 Degrees Shank Round Type Standard Steel Insert Thickness 0. 0937" Inscribed Circle 0. 25" Insert Screw TS 25. 45 6M2 Mounting Style Screw Lock Rake Negative Cutting Application Roughing to Finishing Compatible Hardware T 8 Torx Key, TS 25. 45 6M2