<br>Description:<br><br>Nice kit understand the mechanical structures, and transmission.<br>Non toxic, smooth without any burrs, and durable lasting use.<br>Direct assembly, for other accessories, simple assembly, exercises the child&#39;s ability.<br>Great , simple and practical parent child communication or intellectual development, stimulate children&#39;s learning fun.<br>Can exercise the children&#39;s practical ability and other abilities. Cultivate children&#39;s curiosity and to explore science, very interesting.<br><br>Specification:<br><br>Material: Wooden<br><br>Size Chart:<br><br>7cmx14cmx8cm/2.76inchx5.51inchx3.15inch<br><br>Package Includes:<br><br>1 Set DIY Kit Science Experiment<br><br>Note:<br><br>1.This is not infant toy, please from children to avoid eating.<br>2.Please slightly errors due to manual measurement and different monitors.<br>