If you only use a jack once a twice a year, maybe the Harbor Freight unit will hold up, they aren't really known for quality and generally are not rebuildable.
If you a quality, rebuildable jack, take a look at the Norco 71233A
Website and further details
The jacks are rebuildable, 1 yr warranty and low enough to get under our cars.
The customer service people at Norco can point you to a local distributor. (800-347-2232)
I've used one for eight years and extremely pleased with it.