Part location: Front + rear body postProduct major functions & usage: Stabilize body postAccessories:Body Post Stabilizer 4pcsStainless Steel Round Head Screw 3x10 8pcsStainless Steel Round Head Screw 2.5x12 4pcsMajor advantages of upgrading to this part/product:Made with a quality light weight high tensile strength aluminum 6061 T6 for greater durability and more stable to use.