Feature●Contents: 2 packs of original 8-pcs set provide 8X MM, 8X FF Adapter Tracks, plus 4X our exclusive bonus track adapters, total 20 pcs.●These adapters are standard size, one Size fits all. You do not need multiple lengths adapter, it is not necessary at all. Wooden railway track system is made to have large wiggle room to connect. One size is easy to handle and manage by children.●One piece construction. Beautifully crafted with premium solid wood.●Compatible to all major wooden railway including Thomas, Brio, Chuggington and etc.●Conforms to the US and Canada toy safety standards.Description