Get this kit to keep your kids occupied with hands-on activities while enjoying the "robot" crawling when it is completed. This DIY kit is simple enough to be built by 4 years old children, with parent's help. And children 6 years old and above can build it by themself! Let's them explore the fundamental mechanical structure of the mechanical machine, and the concept of electric motor. Note: Not suitable for children under 4 years old! Features: Do It Yourself wooden kit Crawling Robot for kids Mimic Worm Crawling Suitable for age 4 years old and above Come with everything needed to assemble as a moving robot Powered with two (2) AA-size batteries (included in this kit) No soldering is needed Moveable or crawlable :) Learn the basic structure of the simple robot Packing List: Wooden parts for the robot body structure 4 x Plastic wheels (black and white) 1 x Small DC Motor 2 x Plastic wheels for small DC motor 1 x 2xAA size battery holder with wires (Black and Red) 2 x Rubber Band Some Iron rods Some bolts and nuts, plus some self-tapping screws 1 x Small Screwdriver 4 x AA battery (not shown in the picture, but included)