About this item What will You Get: 4-Pack RV Stack Jacks with rubber pads, which is ideal for stabilizing and leveling your RV. They provide a reliable stabilization solution for your RV, trailer, camper, etc. Make Your RV Stable: These RV stabilizer jacks are made of durable cast aluminum, anti-rust & corrosion resistant, with a square base design, each can support up to 7500lbs, with which you needn’t worry about your RV moving or bouncing anymore. Height Adjustable: The height of the RV stabilizing jack can extend from 11" to 17", they may not rise very high, thus are recommended to use for lower to-the-ground rigs for sure. Please Note: These jacks are only for stabilization usage. Do Not Use To Raise. Easy to Use: Simply position each stack jack stand underneath your RV and spin the “T” shape handle to raise it to the proper height to reach appropriate leveling and stabilization. Recommend placing wood or concrete blocks under jacks for better use. Lightweight & Portable: These RV jack stands weigh less than 40 lbs in total; besides, when not in use, they can be compacted and nested together for easy storage. Overview Vehicle Service Type: RV, Trailer, Van Material: Aluminum Load Capacity: 7500 Pounds Brand: RVGUARD Minimum Height: 11 Inches