This is a lens that threads on to many cameras (any camera you want to get an adapter for) to allow you to take really wide angle pictures (0.42x normal). I am including a 55mm thread adapter, which attaches it to my Minolta 55mm lens, but you should be able get one for other sizes from a camera store for a few dollars. The lens is nicely made, and I have only used it once since new. These are listed on that big auction site for $49 ($54 Buy it Now) + shipping. $33 includes shipping in CONUS.
Condition is basically like new as far as I can see...
Includes caps, case, instruction sheet, and 55mm adapter.