Michael's FatBoy limited edition TeslaCoil is machined from a solid bar of aluminum and features tightly wound copper wire to simulate the windings found on an electric motor. All of Michael's pens are made in the U. S., and the company has garnered much attention for this and other reasons since its inception less than 10 years ago. The TeslaCoil is available as a fountain pen, rollerball, ballpoint and mechanical pencil. They are priced accordingly: $495, $295, $195 and $195. I like Michael and his products--fun, well-made and unpretentious.