dual rotary potentiometer: 1.Passed ISO9001,ISO14001,ISO/TS16949 2.Rotational life : 100000 cycles 3.Brand:LJV dual shaft 8 mm rotary encoder potentiometer RP08140SFXX ... amplifier, DVD player and GPS navigation We produce rotary encoder, potentiometer and switch.rotary encoder,potentiometer and switch for musical instruments, audios,medical equipment ...