Manual number: LOS234003This item includes :Tie Rod-2pcsStainless Steel Round Head Screw 4x25-2pcsStainless metal Round Head Screw 4x30-2pcsStainless Steel Lock Nuts 4mm-4pcsProduct major function & usage:Support and stabilize the rear chassis1. The human body associated with the tie rod is manufactured by a light weight high tensile power aluminum 6061 T6, ball ends are made by POM for better strength and durability.2. Adjustable design utilizing clockwise and counterclockwise threads.