Pi 3.14 Coin ups It offers a compact solution

It offers a compact solution to keep things together on your workbench or throw it in your bag and carry your tools to go

made from metal alloy (zinc and aluminum)

hard drive

Can be worn on either shoulder

Pi 3.14 Coin ups It offers a compact solutionThe number pi () is a mathematical constant that is the ratio of a circle's circumference to its diameter. Approximately equal to 3. 14159, although the decimal representation never ends. This heavy copper coin feels good in the hand and the pocket. The copper coin blank is pre tumbled before minting for a smooth edge and then given an antiqued finish. Each Pi coin comes in its own wax sealed packaging with useful and useless pi facts.