Along the wall, diagonally from top to bottom, in steps, or on a zigzag course this tube-shapedMarble Track Wall Activityallows plenty of design freedom. Depending on the available space and age of the children, one or more tubes can be mounted on the wall. Besides the wooden balls (120264), other balls can also be used. Follow the path of the balls and find out which ones travel the fastest. The pre-drilled holes are different sizes and distributed over the entire length of the tube. Practice makes perfect! The balls don’t fit all in the same size holes. The catch bin (sold separately) is ideal for catching the balls.THIS ITEM IS FOR ONE MARBLE TUBE.Size: 4 W 47 1/4 LHardware included.Made of birch and rugged plastic. Ten year warranty. Made in Germany.NOTE: Catch Bin (120263), Wooden Marbles (120264) not included, please order separately.*** HABA is custom produced, no cancelations, modifications or returns allowed.Lead time is usually 2-14 weeks, depending if we still have some in stock in the US.