Ball runs are a fascinating way for children to have fun building and experimenting. The Ball Run Peg Board is easy to assemble at any time to create new challenges, and helps children learn about the laws of physics through play. By trying different things, they learn about slopes, distance, speed, gravity and weight and how they all work together. Cut the tube into smaller segments if desired. Wind the plastic tube through the Wall Peg Boards – 208401 & 208403 to create a ball run. Made of plastic. 197″Long.External Diameter: 3″. Internal Diameter: 2″ Ten year warranty Made in Germany. This tube DOES NOT fit the Wall Strips with Loop attachments. Order120256- Plastic Tube for the wall strips with loop attachments. Ball/Marble Run Components (Sold Separately): 120256- Plastic Tube 208314- 6 Straight Connectors 208097- 3 Y-Shaped Connectors 208401- Small Peg Board 208403- Large Peg Board 120264- Wooden Balls Mix 6-Piece Set (colored) – 2″ *** HABA is custom produced, no cancelationsor modifications allowed.Lead time is 12-14 weeks.