Four .5 to 3.0 volt motors per package;Will work with many power sources - batteries and solar cells work perfectly;Great fun, perfect for science experiments and projects with electricity;Science parts by the award winning science experiment creator Science Wiz;Intended to be parts for use with science projects, science fairs, etc. and are provided with minimal to no operating instructions

• Science Wiz - DC Motors - Working Voltage Range .5 to 3.0V (Pack of 4)

Science Wiz - DC Motors - Working Voltage Range .5 to 3.0V (Pack of 4)Science Wiz