MF Doom pin This is a 2 inch custom UV printed pin. It’s highly detailed. This custom design is only sold exclusively here at my shop. If you have any questions, feel free to ask. UV printed pins are crafted through an interesting and meticulous process. When creating a custom UV printed pin, the design is produced using an inkjet method where ink is instantly dried using a UV light, resulting in quick, vivid, and crisp designs.