KOPT Optimus Key info Bit width (E): 36.500mm Stem diameter (B): 8.000mm Bit length (D): 15.100mm Key length (A): 121.005mm
R-521 R-521 Brass Out-of-Stock info Material: Brass Bit width (E): 16.300mm Stem diameter (B): 5.300mm Bit length (D): 9.300mm Key length (A): 66.000mm Bit thickness (F): 3.950mm