The product includes :Gearbox Cover-1PCSStainless metal Cap Head Screw 2.5x16-4PCSOriginal title / Part No:AXI2320041. Offer protection for front part and rear gearbox, stabilize the differential for better performance.Major advantages of updating on part/product :1. Constructed with a great quality metal for great durability and protection. Weighing at 67 grms, this component has good weighing effect.2. tall accuracy the differential to complete a smooth performance.