Kullerbu Melody Dominoes SetRollicking, rolling, rhythmic fun with Kullerbus Melody Domino Set Wooden balls can make music as they go down the track Lovely melody can be created on the jingle sound staircase Balls spin around steep curves, knocking down dominos Set includes various heights for maximum momentum All pieces can be combined with other Kullerbu sets Crafted from sustainable sourced beech wood and lime plywood Designed for ages 2 8 Kullerb is a flexibly expandable