Description:1.Single Linear, Suits Most Standard Knobs.(this item do not include Knobs)2.Top adjustment type and knurled shaft for easy operate in daily use.3. Mainly used for dimming, speed regulation, temperature regulation, etc. of electronic products, suitable for , audio and video, governor, microwave oven, loudspeaker, amplifier, etc.4. Knurled shaft with split design for push-on knob. Specification:Product Name: bon Film PotentiometerModel: WH138Material:bon film MetalResistance Value: 500K ohmTolerance:+/-10%Turn Number:Single TurnTerminals Number:5Features: Round ShaftTotal High: 40mmBase Size:18mm x 24mm ( HxD)Screw Thread Dia.: 7.6mmShaft Diameter:6mm/0.24 inchPackage Content:2 x bon Film Potentiometer