5CSS1 5CSS1 info Material: Brass Original producer: CLASS (RU) Bit width (E): 21.450mm Stem diameter (B): 5.000mm Bit length (D): 24.000mm Key length (A): 91.000mm Bit thickness (F): 2.450mm
KOPT Optimus Key info Bit width (E): 36.500mm Stem diameter (B): 8.000mm Bit length (D): 15.100mm Key length (A): 121.005mm