Hornby 2nd Radius Double Curve large track model. 2nd Radius 45 degrees. Safety warning. Not suitable for children under 36 months. Some parts have functional sharp points or edges. Handle with care. Hornby is a household name and is famous as the UK brand leader in the model railway hobby. The company's founder was Frank Hornby who applied for a patent in 1901 to protect an invention he called 'Improvements in Toy or Educational Devices for Children and Young People'.