Honeywell 53C120K 1 Gang Rotary Conductive Plastic Potentiometer with a 6.35 mm Dia. Shaft, 20kΩ, ±10%, 2W, Linear. Mounting Type: Panel Mount. Termination Style: Solder Lug. Shaft Length: 19.1mm. Maximum Operating Temperature: +120°C. Diameter: 27.8mm. Minimum Operating Temperature: -55°C. Actuator Type: Slotted Shaft.