The product includes :Gearbox Cover-1PCSStainless steel Cap Head Screw 2.5x16-4PCSOriginal title / role No:AXI2320041. Offer security for front component and straight back gearbox, support the differential for better performance.Major features of upgrading on part/product :1. Fashioned with outstanding quality steel for great durability and protection. Weighing at 67 grms, this component has good weighing effect.2. tall accuracy the differential to accomplish a smooth performance.