The product is a USA Standard Gear Spider Gears internal kit designed for Ford 10.25" differentials. It is manufactured in the United States and is specifically made for rear placement on vehicles. The internal kit includes spyder gears, providing essential components for the differential assembly. This product is designed for a universal fitment and is labeled as the ZIKF10.25-S-35 USA Standard Ford 10.25" Spyder Gear Internal Kit.