This wire is constructed from 1,000 strands of bare copper with a thin wall silicone insulation. Only 3.0mm in diameter, this +- 14 gauge wire fits right between 13 gauge and 16 gauge products to provide an alternative for those demanding higher power delivery with great flexibility. 112th scale, WGT and Oval pan cars will benefit from the larger conductor while still maintaining a tweak-free chassis for better handling.