Material Chrome Plated Steel Unit & Package Sold by each, color plastic bag Chrome Plated Steel I.D. Height Description 20170 7-1/4" 2-3/4" 7-1/4" dia. axle, 12 of 1/2" studs 20180 8" 2-3/4" 8-1/2" dia. axle, 8 of 5/8" studs, also fits "Peterbilt" 1995 up Part No. & Image Selection Rear Hub Caps in Classic Shape Part No.: -- Please Select -- 20170 20180 Combination of product variants is not available Updating... Related Products Cap Style Lens and Stainless Steel Cap Trailer King Pin Lock Tubular Style Tire Valve Stem Covers with Crystal on Top Chrome Center Light Panels with 4″ (4) Round Lights Stainless Steel Double Light “L” Shape Mounting Bracket with Oval Sealed Lights Lug Nut Cover Installation Tools