When you touch down in the campground after hours on the road, you have your checklist that you need to go through before you can call it a night. Hooking up to city water, plugging in to a power source, and stabilizing your RV should be at the top of your list. If you own a fifth-wheel or a "Toad" (tow behind/pop-up camper) then you need strong, high-quality, and easily-dialed-in support jacks that will stabilize and level out your unit in quick fashion. We know that this is a priority for you and your load-in list. Specifications: Weight Capacity: 5,000 lbs or 7,500 lbsExtended Height: 24" or 30"Retracted Height: 4"Mounting Plate Bolt Hole Size: 3/8" Durable Built to endure repeated use, these sturdy jacks are designed for the long haul with your RV. Featuring a durable thrust bearing and thread bolt, they operate smoothly with a steel, padded crank handle. Ergonomically crafted, they ensure quick setup, whether you're ready to hit the road or relax. Reliable Our jacks feature solid-steel butterfly supports at the top for secure connection to your RV's underside. The wide plates distribute weight evenly, stabilizing the jack and protecting your RV floor. The bow-tie base at the bottom provides additional stability, even on uneven terrain. *INDUSTRY STANDARDS HIGHLY RECOMMEND THAT YOU HAVE A STABILIZATION IMPLEMENT ON EACH CORNER OF YOUR MOTORHOME, FIFTH-WHEEL, TOW-BEHIND, POP-UP, OR OTHER RECREATIONAL VEHICLE. HAVING ANY LESS THAN ONE SUPPORT ON EACH CORNER OF YOUR UNIT IS EXTREMELY DANGEROUS AND COULD LEAD TO CRITICAL INJURY OR DEATH. USING THE JACKS OUTSIDE OF MANUFACTURER'S INSTRUCTIONS VOIDS ALL WARRANTIES, AS WELL AS WAIVES ALL LIABILITY OF MANUFACTURER, RESELLER, AND ALL SUBSIDIARIES ATTACHED TO THE PRODUCT OR SALE OF THE PRODUCT.* **ADHERE TO ALL RECOMMENDED SAFE LIFTING AND OPERATING PRACTICES WHEN RAISING OR LOWERING YOUR STABILIZING JACKS**