This fret contains 16 delayed action autocouplings for use on 0 gauge layouts. They may also be used in 7mm scale narrow gauge, e.g. 0-16.5.
Lengths of PBW phosphor bronze and SWDG plated steel wire are provided in the pack. The use of the LBJBC loop bending jig is recommended, so that the coupling loops are all made to the same size. To make the couplings operational, you will also require one or more PK MAG electromagnets.
The actual size of the fret is 49 x 79½mm; it is etched in 0.015″ brass. Each coupling is approximately 16mm long and 8mm wide. The photos of the completed couplings are actually of DGA, but the overall appearance is the same.