Create Better Stability: These camper slide out jacks are constructed of a solid base and heavy duty steel. AUH’s slide out jacks provide a good stability for your RV or camper, so you and your family can enjoy a safe and stable travel. Universal U-shape Steel Plate: Universal RV stabilizer jacks for travel trailer slide out stabilizer features 5-inch (12.7 cm) circular base and a 5.1 by 3-inch (13 by 7.6 cm) u-channel bracket steel plate for secure positioning of your RV stabilizer bars; The stabilizer jacks fits 15.1" ~35.4" Inch RV Slide Out Supports. Package includes (2) camper slide out stabilizers travel trailer leveling jacks to add to your camper accessories. Easy to Install: Step1-Pull the tube up while pulling out the lock pin and adjust it to the required height,then plug in lock pin. Step 2-Turn the wrench clockwise: Raise the bolt rod. Step 3-Place the jack under the slide and turn the wrench up and down to adjust the bolt rod section to suit the final height. Durable and Anti-rust: AUH’s slide out support jacks are made of heavy-duty alloy steel square tubes finished with a zinc powder-coating for longevity and resistance to rust and corrosion. Applicability: The RV stabilizer jacks are compatible with variety of vehicles,such as RVs, trailers, ATV, trucks, utility trailers and pop-up campers. It is recommended to use concrete blocks or wooden leveling blocks for campers to stabilize the RV slide-out stabilizer jacks on a level surface. Reliable Service: AUH is dedicated to offer satisfactory products and service for each customer. This RV slide-out support comes with a lifetime after-sale service. If the part fails while in use or any parts are missing while receiving the package , simply contact us for a replacement. Save time and money by purchasing our support jacks and taking advantage of our lifetime service. The RV stabilizer jacks are compatible with variety of vehicles,such as RVs, trailers, ATV, trucks, utility trailers and pop-up campers. It is recommended to use concrete blocks or wooden leveling blocks for campers to stabilize the RV slide-out stabilizer jacks on a level surface.