Diesel feels superior to the 'old fashioned' steemies and boy does he let them know it! Of course, he can be a useful engine too at times and despite his showiness he's still managed to make a few friends around Sodor. The 'Take n Play' Thomas range is made up of durable die-cast engines and plastic track, please note it is NOT COMPATIBLE WITH ANY WOODEN RAILWAY SYSTEMS (or with with Hornby Thomas the Tank Engine, Trackmaster Thomas, or with Mega Bloks Thomas). Though if you still have any of the 'Take Along Thomas' range (or if you've picked up some through hand-me-downs etc.) the take n play engines etc. are compatible. SUITABLE FOR CHILDREN AGED 3 YEARS AND UP.