1460?680mm Adjustable: The retracted height is 460mm, the extended height is 680mm, and the lifting height is 220mm, easy to carry. 2Heavy Duty Design: The maximum load capacity of the trailer jack is about 1000kg/2205lbs, can withstand the rigors of Rv travel and camping. 3Strong Construction: Trailer square jack is made of high strength galvanized iron material, rugged structure, weather resistance, and long durability. 4Simple to Use: The package includes 1pc trailer jack, 1pc mounting bracket and 2pcs bolts, convenient for you to install and remove the jack. 5Universal Fit: This stabilizer jack is perfect for pop up campers, trailer, utility trailer, cargo trailers, Rv, SUVs, campers, and more.