Description: 1.Double Connection, Double Channel2. In the first half, the resistance changes slowly, and the resistance in the second half changes quickly, which is beneficial to control the volume. Specifications: Product Name: PotentiometerModel: A203 (A type Exponential Potentiometers )Resistance Value: 20K ohmChannel: Double ChannelTolerance: +/-10%Terminals Number: 8Body Size: 75*9*7mm (L*W * H)Shaft Size: 15*4*1.2mm (L* W*T)Mounting hole diameter : M2 Package Content :2 x Straight Slide Potentiometer