Dreamup Toys Wooden Railway Block Platform 4-Pack Combine Trains and Blocks Compatible With LEGO Duplo Thomas Brio Ikea Imaginarium Melissa & Doug Kidkraft Mega Bloks Adapter Connector Enhance your child's creativity and inventiveness! Easily build sturdy, multi-level track layouts! Combine wooden trains with popular building blocks (i.e. Duplo, Lego, Mega Bloks, etc) Made in USA Third party tested for compliance with CPSIA requirements and in accordance with the latest testing standards as defined by ASTM