These channels are a very necessary item for those who operate model trolley cars. They are used in tunnels or under structures such as elevated subway lines where the use of an overhead wire is very difficult, The channels keep the pole in contact with the power source. I belong to a club that operates O Gauge model trolley cars. We use uninsulated,24 gauge overhead wire that carries 12 volt DC power. I mention this because model train stores and catalogs no longer carry this product. .
Exactly as pictured and described. Arrived quickly and well-packed.
Exactly what I ordered with unbelievably fast delivery. Thanks