START SLIDESHOWSTOP SLIDESHOW Material Wood Size 11/16" I. D. x 1-7/8" x 1-7/8" high Fits Most 1990+ heavy duty trucks. Features Chrome rim & S. S. script plate on top Unit & Package Sold by each, carded for display Part No. Script 96021 Tractor 96022 Trailer Part No. & Image Selection Screw-In Air Valve Control Wood Knob with Stainless Steel Script Plate Part No.: -- Please Select -- 96021 96022 Combination of product variants is not available Related Products Front Hubdometer Caps Chrome Plated Aluminum C.B. Knobs Dashboard Control Knobs with Script Stainless Steel Two Piece Spring-Loaded Light Bars with Oval (6) Lights in Slanted Style and 3.75″ Bolt Spacing Stainless Steel Rear Center Light Panel with 4″ & 1″ LEDs Lights with Under Glow Effect Stainless Steel “L” Shape Light Bracket for Plug-In Y2K Incandescent Marker Lights