Revamp your truck's interior with the Wood Air Valve Control Knob. Designed as a screw-on air valve knob for heavy-duty truck applications, this accessory is made of wood and features a stainless steel script plate on top with a chrome-plated rim. Choose between tractor or trailer script to match the intended air valve application. The knob measures 11/16 inch inside diameter and 1 7/8 inches in height, providing a compact replacement option for compatible air valve controls. This universal interior accessory is sold individually and is available as an aftermarket replacement part, not an OEM component. The Wood Air Valve Control Knob is backed by a warranty against defects in workmanship and materials from the date of purchase. This item is special order and cannot be canceled or returned, so compare the dimensions and existing knob before ordering to help confirm compatibility with your truck.