MARBELOCITY 4-BAR

Building requires only household white glue no special tools!
It's a unique and playful learning experience for beginner and experienced makers alike!
Build a model of four-bar Linkage! Use the hand crank or attach a motor (sold separately) to watch the marbles ascend and then flip-flop down again!
It's Part of the first marbleocity marble machine line to feature colorful plastic accents! Perfect for beginners; one hour build time. Triple play models can connect to one another for bigger fun!
Also works with marbleocity motor Kit, sold separately. For ages 9 and up.