261G4 MB261 G1 brass info Bit width (E): 13.900mm Stem diameter (B): 5.900mm Bit length (D): 4.950mm Key length (A): 68.900mm Hole diameter (C): 4.000mm Bit thickness (F): 3.400mm
7SPSR 7SPSR info Bit width (E): 37.700mm Stem diameter (B): 7.000mm Bit length (D): 25.450mm Key length (A): 141.300mm Hole diameter (C): 4.300mm Bit thickness (F): 2.550mm
KOPT Optimus Key info Bit width (E): 36.500mm Stem diameter (B): 8.000mm Bit length (D): 15.100mm Key length (A): 121.005mm