Peco HO Scale Code 70 Unifrog Medium-Radius #8 Turnout is electrically “live,” except for the frog tip and wing rails, and operates as an Insulfrog turnout without modification or additional wiring. To power the frog and wing rails, use the supplied connecting wires. Complete instructions on wiring and use are included in the packaging. In HO Scale, Code 70 rail represents smaller 100# per yard rail, common on mainlines in the steam era and on branches and some light rail lines in the diesel era.