JT's strong arm stabilizer kit is designed to eliminate chassis movement in a fifth wheel RV or travel trailer, employing the same engineering as a racing chassis. Stabiliser bars form triangles at the front and rear jacks to eliminate side-to-side and front-to-rear RV movement and shakin. This jack stabilizer kit does not require welding, this system can be easily bolted to the frame of your landing gear and RV’s frame. This stabiliser kit is designed to work with most major caravan jack components - including scissor, front landing gear and telescopic. Fits three sizes: standard fifth wheel kit, short fifth wheel kit and travel trailer. Warranty 3-year limited warranty against any manufacturer's defects. If you have any difficulties and needs, you can contact us at any time. We will get back to you within 24 hours and we will be happy to serve you.