This Classic Engine by BRIO comes complete with magnetic coupling and bright graphics. Measures 2.8" in length. It"s compatible with all BRIO wooden railway systems.The world of BRIO Wooden Railway is a timeless, never-ending journey of building, creating, inventing and imagination. BRIO was the first of its kind with many imitators, genuine BRIO railway is a quality, safe and simple design that cannot be replicated. Watch and play with your child as he develops ideas, builds new layouts, learns simple math through track sizing and matching and grows his imagination by creating stories about his own characters.