I got several of these (10+) with some miscellaneous O gauge parts but have not been able to figure out what they are. They are copper colored, about 1 1/2" long, shaped similar to a tubular rail, and have a 12" piece of soft copper colored wire soldered to the middle of the piece. The piece appears to have paper insulation folded on the inside and the wire has clear insulation on it.
Just curious what these are.
Thanks