Springbots: 3-in-1 Spring-powered Machines traingles For ages 2-10 yrs

For ages 2-10 yrs

can be mounted when the backhoe loading unit has been removed

She'll tame your heart with her sweet eyes

THIS is the one

As they master tricks and gain impressive height

Springbots: 3-in-1 Spring-powered Machines traingles For ages 2-10 yrsBuild 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. The mainspring inside the robot turns gears which enable it to march forward on two legs. The race car zooms across