Accessories:Rear Sway Bar Arm-2pcsRear Sway Bar-3pcsRear Linkage-2pcsStainless Steel Round Head Screw 3x18-4pcsSet Screws 3x5-2pcsSet Screws 4x5-2pcsPart location:Rear sway bar (left & right)Does this product replace a specific part or function?yesProduct major function & usage:Reduce the tilt when the vehicle turnsMajor advantages of upgrading to this product:1. The original car does not have this part on it. Installing this part can enhance the stability of the car body and prevent rollover2. Aluminum + stainless steel combination are more durable and able to withstand stronger forces.