O gauge couplingsPack includes 8 gedge hooks, 8 gedge type links and 16 standard links to make up four sets of couplings. 0 Gauge Chassis kits and Accessories for scratchbuilders and kit modification.This pack contains sufficient components to assemble four pairs of 3- link couplings.The "Instanter" coupling is a development of the standard 3 link coupling.The middle link of the chain is specially shaped so that when lying flat it provides enough slack to make coupling possible, but when this middle link is rotated 90 degrees the length of the chain is effectively shortened, reducing the amount of slack to provide closer coupling, to allow the use of train brake pipes without the need to wind a screw.It can also be coupled from the side of the wagons using a shunter's pole; much safer than having to go between vehicles when coupling them together.PECO 0 Code 124 Setrack and Streamline Code 124 and code 143 Flexible track systems Ref.: PS625 - Also listed as PS625