DCC Concepts DCR-P500 Point Rodding / Track Fixing Pins.
500 hardened and gold plated pins for fixing of rod stools, track or many other things around the layout. Small and subtle but very strong, the gold plating also makes then easy to solder to.
Caution - they are hard, so only use a file or hardened cutters to trim to length. The best fixing pins you will find anywhere.
You can also purchase these pins in packs of 100 (see related items below)