Miscellaneous Musical Instruments

30pcs/lot 15X17mm 6mm potentiometer plastic knob cover WH148 potentiometer knob 6 colors yellow orange blue white red green 30pcs/lot 15X17mm 6mm potentiometer plastic knob cover WH148 potentiometer knob 6 colors yellow orange blue white red green 30pcs/lot 15X17mm 6mm potentiometer plastic knob cover WH148 potentiometer knob 6 colors yellow orange blue white red green