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 Updating... Related Products Cow Bells Heavy Duty 18″ Steering Wheel Covers in Deluxe Texture Series Heavy Duty Exhaust Brackets Stainless Steel Single Light “L” Shape Mounting Brackets with 2 ½” Sealed Lights Nylon Holders for Glad Hand & Connector Chrome ABS Rear Axle Cover Set with Locking Tabs & Cone Hub Cap