This piece of Curved Track is essential to the basic train track as well as the more complicated ones. It is approximately 6 inches long, and is grooved on both sides. Eight curves form a circle. This track piece has engraved "railroad ties" for realism, and is made in Vermont of New England rock maple. All NameTrain and track items are compatible with similar wooden track systems of other companies. Length and height dimensions sometimes vary between brand but that doesn't diminish their ability to interconnect and make really fun layouts! For ages three and up.