Code 55 self-gauging mainline ties are designed as close as possible to replicate real prototype mainline railroad ties in 1/160th scale. The tie strips do not include code 55 rail but the pre-gauged area on the flexible strip makes installing your own rail as fast and easy as laying flex track. Mixed scale 9', 8'-6" and 8' length ties spaced at random with 19 ties to each 30 scale feet match prototype practice. Each strip measures 12" 30.5cm.