This key chain is made from a multi-colored toroid coil - a beautiful specimen of the technology driven by Nikola Tesla’s inductor invention. A great Geek chic gift for the engineer or computer nerd who appreciates beauty and history.

2 1/2” long and 11/8” wide

This key chain comes in a box made of recycled materials - making it easy for gift giving. Your order will also be packaged with recycled and reused materials.