ROKR Marble Parkour Wooden Model Kit

ROKR Marble Parkour Wooden Model Kit This is a fun-to-build Big Funnel marble run 3D wooden puzzle toy. Get ready to race against time & speed with this amazing wooden marble run set!   FEATURES:  Handcrafted marble run 3D wooden puzzle set with a big funnel rail. Includes 254 building pieces and 10 marbles. Consists of a wheel lifter, a stair stepper as an elevator, a spiral funnel,2 straight rails, 3 curve rails, a flip-flop as a switch to drive marbles to 2 paths. Aids in learning principles of Science, Technology, Engineering, and Mathematics(STEM) Precise laser cutting ensures a fluent building experience.   SPECIFICATIONS: Number of Pieces: 254 Difficulty Level: 4/6 Assembly Time: About 6h Age: 14+ Assembly Size: 255mm x 235mm x 185mm