Saddle column provides ratchet action height adjustment. Dual purpose handle serves as carry handle and saddle column release. Multi position ratchet bar provides strength and durability. Formed base adds stability and helps reduce sinkage into pavement. Minimum height 11-1/2", maximum height 17", height intervals 11/16"This pair of jack stands can support up to 3 tons making repair work on your vehicle safe and secure. Four legged based structural frame for stability and quality is unsurpassed by none. If you don't want to lose any productivity or consistency, go with the best, go with Hein-Werner. Made in the U.S.A. Drop Ship Only