5AU13 5AU13 info Material: Brass Original producer: AUNO (IT) Stem diameter (B): 4.800mm Key length (A): 57.500mm
KOPT Optimus Key info Bit width (E): 36.500mm Stem diameter (B): 8.000mm Bit length (D): 15.100mm Key length (A): 121.005mm
5FEB5 5FEB5 info Material: Brass Original producer: FEB (IT) Bit width (E): 18.500mm Stem diameter (B): 4.850mm Bit length (D): 12.350mm Key length (A): 57.500mm Use: Cartridges and boxes Bit thickness (F): 6.350mm