BioMetal Fiber Walking Robot Inchworm - STEM Educational Toy for Kids & Adults, DIY Science Project Kit - Perfect for Robotics Learning, STEM Classroom Activities & Science Fairs

Each BioMetal Fiber Walking Robot Inchworm has one strand of BioMetal Fiber. When current is applied, the fiber heats up and contracts. This pulls the Inchworm's feet apart. When the current is stopped, the fiber cools and expands. Add a little grippy fabric on the bottom of each foot and the spring to return it to its original position, and you can easily see how the little inchworm can walk along most non-slick surfaces. The BioMetal Fiber Walking Robot Inchworm is a great desktop toy, but it could also be the focus point of a killer science fair project.

Batteries 2 x AA (not included)

Dimensions approx. 1.75" x 1.5" x 0.44" (no current) - with a 19" (approx.) leash wire.

BioMetal Fiber is about 0.15mm in diameter.

The BioMetal Fiber works like muscle fiber - when it heats up, it contracts.

Heat up the fiber by applying electrical current.