Scale Model 3D Wooden Puzzle series consists of locomotive trains, cars and trucks all built from laser cut wood pieces that are connected by the slots without using any glue. This train scale model, including the detachable carriage car, measures 12″ in total length, 2 3/4″ in width, and 3 1/4″ in height after assembly. There are a total of 308 wooden pieces across 5 wooden sheets that easily pops and are labeled. Follow the step by step mostly pictorial English instructions and build this enginnering marvel. Recommended for ages 14 and up to build alone, but it would even also be a good bonding project to work on it together with eager and curious younger adults with assistance – making it a great STEM learning with fun!