Sandvik Coromant Shank Tool, Series: T-Max® Q-Cut, 0.63 in Head Length, 5.91 in Overall Length, Rectangle Shank, 1/2 in H x 1/2 in W Shank, 1.18 in Diameter Maximum Workpiece, Insert Compatibility: N151.2-200- 5E, 20 Insert Seat, Left Hand Cutting Direction, R/L151.20 Tool Holder, 0.591 in Maximum Depth of Cut, ANSI Code: L151.20-08-20, ISO Code: L151.20-08-20, Steel