CPL-3 - Greenwich Coupling compatible with NEM355

This is the standard Greenwich Coupling for 4mm. It consists of a brass etch that needs cutting out, folding up and blackening.

This variant has the extra long tang that is folded up and inserted into the NEM socket.

Included is the iron wire needed to make them uncouple when moved over a magnet.

The pack contains enough parts for 5 pairs of couplings.