BeamDocks™ are an add-on option usable with all DuraTuff™ Foam Balance Beams: StarterBeams™, Create-A-Beams™, and Curve-A-Beams™. Docks are 10″ diameter hexagonal-shaped units. Each of the 6 sides has a round slot. All Beams have a matching slot. High-impact plastic tube pieces connect the beam lengths to the Dock. Therefore, beams can fan out from a central hub in 6 directions, or create other zig-zag beam patterns. BeamDocks™ open the imagination to dozens of different shapes and balance challenges. Why not let the kids create their own unique beams? Sold in sets of 6 .