KOPT Optimus Key info Bit width (E): 36.500mm Stem diameter (B): 8.000mm Bit length (D): 15.100mm Key length (A): 121.005mm
YTPEX YTP info Material: Brass Key length (A): 54.050mm Bit thickness (F): 2.000mm Blade length (G): 28.200mm Blade width (H): 7.050mm