Old School Dice & Accessories (OSD) is a retailer founded by long-time gaming enthusiasts specializing in unique, high-quality dice (polyresin, metal, etc.) and tabletop RPG accessories like dice bags, rolling trays, and storage, focusing on standout designs and customer service, with a physical store and online presence. They create their own designs, hand-check every product for quality, and offer exclusive metal dice and accessories, aiming to provide premium gear for games like D&D and Pathfinder.