This is the three-dimensional spherical labyrinth that challenges the limits of your manual dexterity and spatial understanding as you maneuver a 5/8" wooden marble through its entire course. The orb is a complex network of chicanes, multi-planar hairpin turns, zig-zags, and channels—even a sliding gondola. Hand made from 3- and 6-ply Finnish birch that form the track, over 400 hours are involved in its construction. The labyrinth is set inside a 30" diameter acrylic sphere affixed to a wooden base using a stainless steel gimbaled mount that allows you to tilt the sphere in any direction to guide the marble. The entire track laid out on a straight line measures up to 192'. This version has six intertwined pathways that challenge players to complete each course without letting the marble fall off the track using an (optional) series of directional arrows—finishing all six requires a minimum of 224 plane changes. Each orbs' difficulty level can be customized. Please call 1-800-227-3528 for details; special conditions, guarantee limitations, and freight charges apply to this product. 44" H x 41" W x 30" D. (40 lbs.)