A wide range of electrical wire for all your miniature electronic needs. Each conductor is stranded for greater flexibility and comes tinned for easy soldering. Durable PVC insulation is available in multiple colors for easy color coding on your layout. Wire is packaged in convenient, realistic lengths suitable for use on large layouts. Sturdy, plastic spools are conveniently stored on pegboards or similar hangers. Each pack includes a handy application guide for model railroading uses. To reduce voltage drop on HO layouts over 8′.