KOPT Optimus Key info Bit width (E): 36.500mm Stem diameter (B): 8.000mm Bit length (D): 15.100mm Key length (A): 121.005mm
ALLT ALLT info Material: Brass Original producer: ANTONIOLI (IT) Stem diameter (B): 4.800mm Key length (A): 114.000mm Use: Cartridges and boxes