Precision engineered and rugged, all steel zinc plated construction for long life and trouble free operation. Features a "Won't Slip Off" crank and free floating grip handle for easy, comfortable cranking. Extra strong 3-leg tripod with large area pads minimize soft, "sink-in" problems. The tripod presents a compact package for easy storing. Each jack in set comes with a #1 bracket and hardware. Use 3 standard jacks for campers 1500 lbs. or less; 4 standards for campers under 2300 lbs.