The Peco N Gauge Streamline SL-E397 Electrofrog Y Medium Radius Turnout - Single is wooden sleeper type & is constructed of code 80 nickel silver rail. Because both roads are curved, the required distance between sidings is achieved in a shorter length. A most useful turnout for a variety of situations. Two Y turnouts laid toe to toe can do the work of a double slip. Nominal radius; 762mm (30in). Crossing Angle; 8°. Length; 127mm (5in).