KOPT Optimus Key info Bit width (E): 36.500mm Stem diameter (B): 8.000mm Bit length (D): 15.100mm Key length (A): 121.005mm
MTL50 MUL-T-LOCK 50 info Original key: Y Key length (A): 68.750mm Bit thickness (F): 2.450mm Blade width (H): 8.950mm
MTLO66 66 info Original key: Y Key length (A): 68.750mm Bit thickness (F): 2.450mm Blade width (H): 8.950mm