This product is a set of two used/recycled rear end spindle flanges for 1963-1979 Chevrolet Corvette models. The flanges have part number 3839830 and are manufactured by GM in the United States. They are vintage parts and have a direct fitment for the rear left of the vehicle. The flanges are sealed and do not require greasing. The product is not covered by a manufacturer warranty. It is compatible with various Corvette models and other vehicles with the same specifications.