This technique includes :ront Lower Arm-2PCSRear Lower Arm-2PCSStainless metal Round Head Screw 3x16-4PCSOriginal name / Part No:AR330520+AR330521Support the framework and provide the front&rear knuckleMajor advantages of updating because of this part/product :1. Aluminum 6061 T6 material made for better energy, limitation and much more elastic. The delrin collars are positioned toward arms to cut back the play and fortify the fitting.2.Compare towards initial design, the products has a fashionable hollow design.3. Numerous positioning holes for users to modify the angle connected with dampers.