Heavy Duty Adjustable 10 Ton Jack Stand Professional Motorhome Jack Flat Bed Jack (Pair) Super Heavy Duty Design for up to 20,000 Pounds Oversized 5" x 3" Saddle Provides Positive Contact and Stability Designed to strict ANSI Portable Automotive Lifting Device Specs Lift Range From 18-3/4" to 30-3/47" Great for Big Rigs, 18 Wheelers, Tow Trucks, Motorhomes, Etc.