I needed a set of casters so I could move a 25Ton Forging Press around that I am building.It weights a little over 1200lbs.I got these caster in hopes that the built in leveler would make it easy to move and set up.It did, these are amazing, I can move the press around with ease and with the built in levelers it takes a couple minutes and your done.I would HIGHLY recommend these to anyone looking for leveling casters or even if you just want to keep thingsfrom rolling around. They are simplicity itself to adjust.Ed O.