A new twist on creative, build-your-own rolling ramps - the Build N Spin set uses clever wooden spindles instead of a ball. The spindles roll easily and stay on the track through all kinds of bumps and curves. Fun, special blocks, including wavy, wobbly, see-saw, gear and twisty tracks, make every creation unique and thrilling. Can be used with other building blocks sets for even more possibilities!

Set includes: 3 colored spindles, 4 special tracks, 2 twisty blocks and 27 solid wood blocks in various shapes. Made of chemical-free rubberwood. Spindle - 2.75 x 2.5 inches, wavy/wobbly ramps - 8.25 x 2.75 x 1.5 inches. For ages 4 and up.