Just the thing you need (the only option really) to keep that old sturmey running on a modern frame. BUT, the metal is brittle. one of these snapped right in half on me. so, make sure your dropouts are perfectly aligned and don't let any sort of lockwasher touch these as they can scratch and start a fracture or unevenly stress these wimpy little guys.
Bottom LineYes, I would recommend this to a friend