7KLPM4 7KLPM4 7-4 info Bit width (E): 21.080mm Stem diameter (B): 6.900mm Bit length (D): 11.850mm Key length (A): 82.650mm Bit thickness (F): 4.450mm
KOPT Optimus Key info Bit width (E): 36.500mm Stem diameter (B): 8.000mm Bit length (D): 15.100mm Key length (A): 121.005mm