Irrational Pi Pin
Math Pin
designed and sold by oddmatter
Text says: Pi - stop being so irrational. Great Pi Day gift idea for the mathematician, math student, math tutor, math teacher or math geek
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Classic pin-back button covered with scratch and UV-resistant mylar. Printed in the U.S.A.
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UPS MI Domestic (6-8 Business Days)
FedEx 2-Day (4-6 Business Days)
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