Hornby Railways produces a series of 00-Guage model engines, track, accessories, and box sets based on the characters of Thomas and Friends. The track is standard Hornby track; therefore the range is compatible with their main range. This range is designed for somewhat older children than most Thomas toys, as young children are likely to find Hornby trains quite fiddly and the higher price and level of detail than cheaper plastic toys make rough handling of the toys by young children unadvisable. Hornby launched its range in its current form in 1985, shortly after the debut of the television series. It mainly utilises modified versions of existing Hornby engines.