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 Iron Cross Accent & Cut Out High Visibility Class 2 Safety Vest with Zipper Glad Hand Seals Flat Chrome Plastic Push-On Adjustable Lug Nut Cover Door & Edge Moldings Headlight Visor 7.5″ (L) x 2.25″ (W)