KOPT Optimus Key info Bit width (E): 36.500mm Stem diameter (B): 8.000mm Bit length (D): 15.100mm Key length (A): 121.005mm
5SCM4 5SCM4 info Material: Brass Original producer: SECUREMME (IT) Bit width (E): 23mm Stem diameter (B): 5.3mm Bit length (D): 15.3mm Key length (A): 87.8mm Use: Cartridges and boxes
EMK4R EMK4R info Material: Steel Original producer: EMKA (FR) Stem diameter (B): 1.650mm Key length (A): 41.600mm Blade length (G): 16.000mm Blade width (H): 5.500mm