Phoenix QuickTrim Stainless Steel Rear Axle Hub Cover Kit for Heavy DutyTrucks. Hub Cover is 8.25″ in Diameter with 2.88″ Hex Bolt Center Mount for 10-lug Steel or Aluminum Wheels. Made from rugged stainless steel and polished to a mirror bright finish Installation is quick and easy and does not require lugnut removal unless noted Sold as each 10 lug on 285 mm or 11.25″ bolt circle