Check the listing for details. Norton Gemini 99616, Quick Change Discs, 1” (TS) Grit 50, Qty 100. Condition: New – Open box. Listed at 45.99 USD. Box may have minor damage, but box has been inspected for quality and quantity and is NEW. This Norton Gemini 99616 Quick Change Disc Set is perfect for those in the metalworking industry who require precision and efficiency in their sanding discs. With a 1 inch disc diameter, these discs are designed to fit most standard grit sizes, making them a versatile addition to any workshop. The set includes 100 discs, ensuring that you have plenty to use for all your sanding needs. The discs are made by Norton, a trusted brand in the industry, and are designed to be durable and long-lasting. They are perfect for use in quick change disc machines, making them a convenient and efficient option for any metalworking project. Whether you are a professional or a hobbyist, these discs are sure to meet your sanding needs.