This 50T jack is fantastic. I've been using it to jack up a house to restore it at the saggy center column. Without even using the air connection, it can push with ease. Lifting portion is approximately 630 SQ ft per floor, Two stories. The rest of the home is outside of this factor that needs to be lifted. Good cost. Good strength. Isn't leaking. The delivery was inside of two cheap boxes and shown sides of dings during travel but nothing was broken. It's made of pretty thick cast iron.