This product includes :Gearbox Cover-1PCSStainless Steel Cap Head Screw 2.5x16-4PCSOriginal title / Part No:AXI2320041. Offer protection for front side and rear gearbox, stabilize the differential for better performance.Major benefits of upgrading to the part/product :1. Created using an excellent quality metal for great durability and protection. Weighing at 67 grms, this component has good weighing effect.2. tall precision the differential to accomplish a smooth performance.