Pittsburgh 2.5 ton low profile, lot #68049.
No idea how to describe this but this thing is awesome for a cheap jack, it is SUPER LOW it is the only jack I have ever owned that fits under my Viper and Stealths etc WITH EASE its like 2.5 inches tall at the jacking end, and it goes straight back low profile like that for most of the jack - its doesnt increase much in height until close to the pivot/handle. its lower profile then aluminum racing ones I have seen even.
It also jacks fast when theres no load, and jacks high. Has other nice features like a foam cover over the lower part of the handle that would bump your front end if your not careful.
Seriously, I have had like ten jacks over the last 20 years and this one is the best working lowest profile one I have ever had!
Cannot attest to the longevity, but it looks to be of decent quality construction and I've had it a few months and all good so far. At this price I would buy a new one every year.