Jim Clift Design Pi Lapel Pin 1/2" X 1/2" Made in the US Handcast from solid, lead free pewter in our own studio Individually packaged on our signature presentation cards, our pins arrive ready for gift giving! Qty: 1 - $8.95 per pin 1/2&#034; x 1/2&#034;, 13mm x 13mm Handcast from solid, lead-free pewter Made in the US, in our studio in Coventry, RI Secure, metal clutch back Made with 100% renewable energy and recycled materials Makes a great addition to lab coat lapels, name badges, and lanyards Great gift or memento for anyone interested in mathematics