This all-in-one Wall Marble Run Set features four wall panels with mounting hardware, six straight connectors, three Y-shaped connectors, 20 fixing loops, an eight-piece hose set, and six red and blue balls. It is crafted from real wood veneer, beech, plastic, silicone, nylon, and polyester. The hoses include two measuring 2 meters, three measuring 1 meter, and three measuring 0.5 meters, each with an outer diameter of 5.2 cm, an inner diameter of 4.5 cm, and a wall thickness of 3 mm. The balls each have a 4 cm diameter. Designed to encourage the playful discovery of basic physical principles while fostering creativity, the setup can be rearranged at any time to introduce new challenges. Suitable for children ages 3 and up. Ages: 3yrs+. Five year warranty Made in Germany. Set Includes These Ball/Marble Run Components (also sold separately) 208286- 4 Wall Strips 208314- 6 Straight Connectors 208097- 3 Y-Shaped Connectors 208283- 20 Loop Attachments 208407- 8 Plastic Tubes 351317- Wooden Ball Mix 6-Piece Set (red & blue) – 1.5″ *** HABA is custom produced, no cancelationsor modifications allowed.Lead time is 2-14 weeks.