5AU11 5AU11 info Material: Brass Original producer: AUNO (IT) Bit width (E): 22.150mm Stem diameter (B): 4.750mm Bit length (D): 24.400mm Key length (A): 94.000mm
MTL MTL info Material: Brass Original producer: MOTTURA (IT) Stem diameter (B): 5.000mm Key length (A): 112.300mm Use: Cartridges and boxes