Seco Indexable Threading Toolholder, Cylindrical Shank Heavy Duty, Series: Snap-Tap®, Internal, Right, 31 mm Shank Width, 30 mm Shank Height, 250 mm Overall Length, Insert Compatibility: 16NR, 47 mm Head Length, ANSI Code: CNR0032S16AHD, CNR Tool Holder, 19.8 mm Center to Cutting Edge, Clamp Insert Holding Method, Yes