ST905 ST-905 - Code 250 - G-45 Standard CurveFor large scale narrow gauge models running on 45mm gauge track, it is designed for electrically powered models but is also entirely suitable for running radio controlled live steam trains. The robust construction makes it equally at home for use both indoors and outside. These Setrack units are compatible with the Streamline G45 track system. Technical Specification: Frog Angle: 30 Degrees Radius: 600mm