PinMart Gold Plated 3D Light Bulb Lapel Pin Available as a single item or bulk packed. Select your quantity above. Qty: 1 pin Show your respect for your teammate's bright ideas and quick thinking! Our light bulb pin is fun and uplifting! It is made of three-dimensional cast pewter and plated in gold, then polished to a mirrored finish. Great for a science fair or to reward a unique invention! SIZE: 3/4" Each pin comes with a clutch back and is individually poly bagged.