Bigjigs Rail BJT204 Flour and Windmill Learn how wheat is ground into flour and gets to the market, with Bigjigs Rail Flour and Windmill Set The 3-piece set includes a windmill and flour silo, plus a freight car with a removable load Use a Bigjigs magnetic crane to remove the load of flour (magnetic crane sold separately) 3-piece set measures 5.5'' at the base Bigjigs Rail is suitable for children ages 3 and over, and conforms to ASTM and CPSIA safety standards