GT1 GT1 info Original key: Y Stem diameter (B): 8.000mm Key length (A): 80.100mm Hole diameter (C): 5.100mm
KOPT Optimus Key info Bit width (E): 36.500mm Stem diameter (B): 8.000mm Bit length (D): 15.100mm Key length (A): 121.005mm
VI40 VI40 info Material: Nickel-plated brass Original producer: VIRO (IT) Stem diameter (B): 2.550mm Key length (A): 58.550mm Blade length (G): 32.900mm Blade width (H): 7.600mm