Assemble a wooden marble run.
A handcrafted wooden do-it-yourself Marble Run set featuring a big waterwheel lifter. Build your own intricate system of cogs, gears and wheels,and watch marbles racing down slides full of crazy twists and turns! 254 Pieces. (5 pre-cut wood sheets)Ages: 14+Assembled size: 25.5 cm x 23.5 cm x 18.5 cm No glue required!