The purpose of a Catch Turnout is to derail a vehicle before it rolls out of a siding or branch line on to a main line. This ever-popular trackage system for N offers a choice of either wooden or concrete type sleeper flexible track and a wide range of turnouts and crossings in both Insulfrog and Electrofrog types. Suitable for all makes of N Gauge trains and fully compatible with PECO Setrack. Technical Specification: Length: 86mm Recommended to be used with: SL-310 Conducting Rail Joiners: Nickel Silver for PECO Code 80/55 track SL-311 Insulated Rail Joiners for PECO Code 80/55 track SL-14 Track Fixing Pins: Chemically blackened mild steel for unobtrusively pinning down trackwork.