I have two. One I bought new at Sears when it came out. That one looks like the above, but with a black ratchet selector ring (red was later). The other was a buck at a flea market and has a bit storage handle. Green ones are Schroeder branded.
As MAD pointed out, the ratchet mechanism is very rough. I bought mine to get more torque, and the thumb slot does help, but I haven't touched either in years. Nowadays I'll either use my cordless or hammer impacts where I'd have used this before.
