Groove milling tools | CoroMill® 331 CoroMill® 331, adjustable cutter for half side and face milling​​ Bore with keyway - External coolant supply Imperial (inch) Ordering code DC DCONMS DHUB BD LB LF THUB TQ RPMX [inch] [inch] [inch] [inch] [inch] [inch] [inch] [ft] [1/min] L331.52-203T51MM 8.000 2.000 2.677 7.795 1.047 1.149 1.228 2.2 9600 R331.52-203T51MM 8.000 2.000 2.677 7.795 1.047 1.149 1.228 2.2 9600 R331.52-254T51MM 10.000 2.000 2.677 9.764 1.047 1.149 1.228 2.2 8500 R = Right hand, L = Left hand 276