This Chrome Aluminum Panel Light Dimmer Knob is designed specifically for 2006 and older Kenworth trucks. Made from billet aluminum, this knob is durable and built to last. It fits A and B model dashes and is sold individually. Compatible with most 2006 and older Kenworth T600, T800, W900B, and W900L makes and models, this knob is a practical and functional addition to your truck's interior. Upgrade your panel light dimmer with this high-quality knob for improved functionality and style.