Uxcell a15040700ux0370 5 Piece 50K Ohm 3 Terminal Linear Taper Rotary Volume B Type Potentiometer Pot, B50K Product name: potentiometer; resistance value: 50Kohm; adjustment Type: top adjustment; Type: single Linear (Type B) Features: knurled shaft; power supply: AC 220v-6a; shaft diameter: 6 mm / 0. 2 inch Shaft Length: 13 mm / 0. 51"; mounting thread diameter: 7 mm / 0. 3"; base size(approx): 17x 7. 3mm / 0. 67" x 0. 29"(D*h) Knob size(approx): 15 x 17 mm / 0. 6" x 0. 67"(D*h); knob color: red, black; total height: 31 mm / 1. 2" Material: metal, electronic parts; net weight: 38G; package: 5pcs x potentiometer