KOPT Optimus Key info Bit width (E): 36.500mm Stem diameter (B): 8.000mm Bit length (D): 15.100mm Key length (A): 121.005mm
LTC1P LTC1P info Material: Brass Original producer: LT (CN) Key length (A): 55.650mm Blade length (G): 26.100mm Blade width (H): 7.800mm
GDA7R GDA7R info Material: Nickel-plated brass Original producer: GERDA (PL) Stem diameter (B): 2.670mm Key length (A): 64.600mm Blade length (G): 27.000mm Blade width (H): 9.600mm