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High quality knob hat, whose adaption: potentiometer, encoder, amplifier speaker, car audio, band switch, and other fine workmanship, feel comfortable, beautiful and practical, and it can be used in special cases, such as all kinds of cabinet medical equipment, special equipment and so on.
link:http://www.rubberplasticparts.com
Colorful D Shaft Insert Potentiometer Control Knob Face Plastic Hat