ITEM NAME:10PCS Top Adjustment Linear Dual Knurled Shaft Potentiometer 50K Ohm B50K A1C1 10PCS Top Adjustment Linear Dual Knurled Shaft Potentiometer 50K Ohm B50K A1C1 50K ohm, 6 Terminals, Linear Dual(Type B), Suits Most Standard Knobs. Top adjustment type and knurled shaft for easy operate in daily use time. Main used to control electrical devices such as volume controls on audio equipment. Knurled shaft. With split shaft for push-on knob. Product Name : Potentiometer; Resistance Value : 50K ohm; Adjustment Type : Top Adjustment Type : Linear Dual(Type B); Features : Knurled Shaft; Shaft Diameter : 6mm / 0.24" Shaft Length : 15mm / 0.6"; Mounting Thread Diameter : 7mm / 0.28"; Base Height : 11mm / 0.43" Base Diameter : 17mm / 0.7"; Material : Metal w Electronic Parts Weight : 71g; Package : 10 x Potentiometers Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/-1-3 cm.