I have one practically identical to the Snap-On, excepting the grip. It is an S-K brand, Model 3870.
http://www.skhandtool.com/productcat...token=89782179
Unchanged after 30+ years, but yikes! I know I paid a fraction of that-hell, that was a week's pay when I was a teenager working in the auto body shop. It is one of my favorite ratchets, though.