The Leitz TZFOO is an adapter tube which allows select Leitz Telyt lenses to fit directly to a Leica thread mount body- no Visoflex required. It has a convenient accessory shoe for a viewfinder (viewfinder not included) and a 1/4" threaded tripod attachment point on its base. Cosmetic condition is excellent overall, with minor paint and mount wear (mostly on the unchromed brass lens mount) Works fine- it's a tube- but there is no way to visually focus a lens on this tube when mounted to an LTM Leica, so keep that in mind. This would be a pretty useful accessory if you wanted to use a Viso lens on a digital camera with an LTM adapter, though. In excellent condition, with light cosmetic wear.