HABA Clamps and Ramps Marble Ball Track Accessory (Made in Germany) A perfect complement to all HABA's marble ball track sets: includes many basic solid wood blocks and clamps for better stability. Contents include: 1 long ramp (12.6 inches), 1 ramp (6.3 inches), 1 redirection block, 1 bevelled rectangular block, 1 rectangular block, 1 square block, 2 rectangular blocks with hole and 6 plastic clamps. HABA's marble ball tracks can be enjoyed by the youngest and oldest children alike. The plastic clamps make set up more stable and enjoyable for the younger children. The innovative pieces make interesting designs to challenge the older kids. Made from solid beech wood that comes from sustainable forestry in Germany. A perfect addition to your existing HABA marble ball track set. Compatible with all HABA Marble Ball Tracks & Accessories and HABA building blocks. Suitable for beginner to expert architects ages 3-12.