"Drophead" spanner

[derrynoose]

I don't know the correct name for it but I am looking for an open-end spanner, one where the open end, instead of being in line with the rest of the spanner, is at a lower level. There is a right-angled bend in the handle, in fact. I want to operate in a recess which will not accept a straight spanner. The nut is at the end of a pipe so I can't use a socket. Does anyone understand my explanation, and is the item readily available? Thanks.

[dougielogan]

swan neck.