The JVC Genuine Turntable Speed Knob / Slide Switch 1003100565 / 4430213001 in black is a replacement part designed specifically for JVC turntables. This switch allows users to easily adjust the speed of their turntable, providing precise control for a smooth and accurate listening experience. Made by the trusted brand JVC, this knob is compatible with JVC turntables and is a crucial component for maintaining the functionality and performance of your record player.