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 Heavy Duty 18″ Steering Wheel Covers in Deluxe Stitching Series WindRider Chrome Flying Goddess Hood Ornament Premium Hi Viz DOT-C2 Conspicuity Tape in White 18″ Strips Lighted Bumper Guides 7/8″ Dia. x 49″ (L) in Tall Pyramid Style w/ Chrome Steel Clamps for Steel Bumper Chrome Plastic ABS Front Axle Cover Set with Locking Tabs & Standard Hub Cap Front Hub Caps for Kenworth & Freightliner 1996+