The technology of the future is here today - now available to non-engineers! Build Your Own Fuel Cell contains complete, easy-to-follow illustrated instructions for building multiple types of proton exchange membrane (PEM) fuel cells, as well as templates for 6 PEM fuel cell types, including convection fuel cells and oxygen-hydrogen fuel cells. Monolithic and stack. Two different low-tech fuel cell construction methods are covered: one requiring a bandsaw and drill press, and the other requiring only a few hand tools. Anyone with minimal skills and tools will be able to produce high-quality fuel cells from readily available materials. Electrochemical device, no pollution, no hazardous emissions. Exquisite workmanship, compact size, portable and easy to use. Color: Photo Color. Material: Plastic. Package Contents: 1x PEM Hydrogen Fuel Cell. Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm.