Function: Rear Trail Arm Frame Rust Repair Section will fix the areas in front of the rear axles where rot typically occurs, include Driver and Passenger Side Lower Rear Trail Arm Mount, fit for1997-2006 Jeep Wrangler TJ. Design: Our design includes a drain hole to prevent debris and water to enter and creat rust over time. Material: Frame repair kit made from high strength 10 gague steel. Thicker than your existing frame. Make you safer on the road. Unique: Zinc-coated surface treatment effectively prevents rust, prolongs the service life, does not affect the welding at all. Easy to Install: Each piece measures approximately 20" end to end. Just remove the old, Weld it. New Upper Control Arm Fastener hardware to make your installation easier.