GT2 GT2 info Original key: Y Stem diameter (B): 8.000mm Key length (A): 76.850mm Hole diameter (C): 4.800mm
201G4 201 G4 Old gold info Bit width (E): 14.100mm Stem diameter (B): 6.000mm Bit length (D): 6.050mm Key length (A): 81.000mm Bit thickness (F): 3.500mm