Uxcell a15102600ux0252 5 Piece Dual Linear B Type 50K Ohm 6 mm Knurled Shaft Rotary Potentiometer, 0.37" Width, 0.59" Length Go to amazon.com Related posts Thing need consider when find b50k dual? FeatureProduct type - potentiometerProduct Name : Rotary Potentiometer; Model : B50K; Technology : Carbon FilmMade in china DescriptionThe product Type is Uxcell 5Pcs dual linear b Type 50K ohm 6mm knurled shaft rotary potentiometer, made in China.