Peco OOT18 HO Scale HO 18″ RADIUS TEMPLATE\nThe Tracksetta OOT18 OO Gauge 18″ Radius (457.2mm) Tracklaying Template is part of the Tracksetta system – the easy way to kink-free trackwork and transition curves.\n\nThe Tracksetta templates make the job of track laying easier, quicker and more reliable. Available in eight different radii plus a straight unit.