Euclid's 47th Problem Pythagorean Theorem with Grid Black & Gold Masonic Lapel Pin - 3/4" Tall Measures Approximately - 3/4" Tall Butterfly Clutch Backing Perfect for lapels, ties, hats, jackets, bags, etc. Makes a Perfect Gift! Made by The Masonic Exchange You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!