Chrome plastic front axle cover with 33mm push on lugnut covers Removable Center HubcapBeauty Ring10 Lug Nut CoversClear Plastic Wheel-Protector Rim (optional)Universal - fits all trucks, including Peterbilt, Kenworth, Freightliner, Western Star, Mack, Volvo.Lug nut covers PUSH ON to the lug to hold the hubcap/beauty ring pieces onto the axle. No lugnut removal necessary!