The ESCO 22 Ton Heavy Duty Jack Stands with Locking Support Pin, 1 Pair (Model 10455-PAIR) is used to support loads up to 44,000 lbs. per stand. Great for construction, fleet and semi-truck, material handling, maintenance garages and more. Locking pin on support post column adjusts to 3 different axle height positions. Locking pin holder is secured to stand to prevent loss. 1/4 in. thick solid steel base plate for added stability.