An acoustic extension for your child's existing HABA marble ball track set. As the marbles bounce down the five stairs, they create a lively musical sound. The bell can be used to signal the completion of the marble run or can be inserted anywhere along the way. This set contains 1 sound staircase, 1 bridge with bell, 1 redirection block and 6 glass marbles. Sound staircase measures 4" x 3" x 5.5". Made from solid beech wood that comes from sustained forestry in Germany. Compatible with all HABA Marble Ball Tracks & Accessories and HABA building blocks. Suitable for beginner to expert architects ages 3-12.
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