9mm rotary potentiometer with metal shaft and with switch, it is RoHS and have crossed the ISO9001 quality certification. The size is small and have the airproof function.

The detailed specification of the item as under:

Resistance range: 5-250K¦¸
Tolerance of resistance: +/-20%
Resistance taper: A B C D
Power rating: 0.05W
Rated voltage: 50V AC
Terminal resistance: 10¦¸ max
Rotational noise: ¡Ü100mv
Tracking error: B 0~-20dB+/-2dB A C D 0~-40dB+/-2dB
Insulated resistance: DC250V 100M¦¸ min
Withstanding Voltage: AC300V 1 minute
Total Rotational Angle: 300+/-5degree
Operating force: 50-250gf. Cm
Click slip-out force(only center click): +/-30~100gf. Cm
Shaft Stopper Strength: 4Kgf. Cm min
Switch Rating: DC16V 1A
Switch Action: 50~300gf. Cm
Switch working Angle: ¡Ü50degree
Switch contact resistance: ¡Ü50m¦¸
Mechanical endurance: 10000 turns per min
Switch life: 10000 turns per min