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 Related Products Stainless Steel Double Light “L” Shape Mounting Brackets with 2″ Sealed Lights WindRider Chrome Fighting Stallion Hood Ornament Driver’s Daily Log with Detailed DVIR Mini Acorn Fastener Set Lighted Bumper Guides 1″ Dia. x 51″ (L) in Cap Style for Steel Bumper Chrome Two Piece Rear Light Bars with Oval (6) Lights in Slanted Style