KOPT Optimus Key info Bit width (E): 36.500mm Stem diameter (B): 8.000mm Bit length (D): 15.100mm Key length (A): 121.005mm
5MT19P 5MT19P info Material: Brass Original producer: MOTTURA (IT) Stem diameter (B): 4.950mm Key length (A): 133.200mm Use: Cartridges and boxes