This fret contains 16 delayed action autocouplings for use on TT gauge and 009 (and similarly sized narrow gauge) layouts. Modellers working in 3mm finescale (14.2mm gauge) are advised to use the slightly larger DGE coupling.
Lengths of PBW phosphor bronze and SWDG plated steel wire are provided in the pack. The use of the LBJAD 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 33 x 53mm; it is etched in 0.010″ brass. Each coupling is approximately 11mm long and 5mm wide.