B001GAL4KI Foam Create-A-Beam Deluxe Set

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Create your own configurations
Each section is 2 1/2″H x 5 1/4″W x 15″L and connect by inserting 6″L plastic rods into pre-set holes
Use BeamDocks to increase the number of shapes and challenges
Available in a deluxe 18-piece set with three sections each of blue, green, orange, purple, red and yellow or a six-piece starter set (no holes in sides of sections) with one section of each color