This piston dock with industrial modern art design is made from a 1940's radial engine piston called the WWII Jacobs R-755. The said piston was used to power such airplanes as the Beechcraft Staggerwing, Boeing Stearman 75, and the Avro Anson. The piston is high-polished to achieve a mirror-like luster. This J-Cobs Piston Dock for Lightning Devices is marked with a Flying Monkey Stamp. The Plane Pieces Inc. original design is made in the USA. It measures 5" in diameter and 3" in height. The dock comes with an Apple Lightning USB Cord. The charger is designed to fit your iPod, iPhone, or iTouch without a protective case. The charger may not work correctly if you are using certain protective cases. The 80-piece limited edition features hand-engraved numbering at the bottom of the charging dock.