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Assemble Toys that Spring into Action!
Build a motorized robot, race car, and countdown timer — all that run without any batteries or electrical power! The secret behind these fascinating machines is a power source called a mainspring — a spiral-shaped spring that stores up energy when wound up by hand, and then converts that stored energy back into motion when it discharges.
As you assemble these models one at a time from over 130 pieces, you will learn about the inner workings of spring-powered devices like wind-up toys and ticking mechanical clocks. Easy, snap-together assembly of 133 parts requires no glue. The kit includes step-by-step illustrated 64-page instruction manual.
For ages 6+.
|Age Range||5 And Up|