S.D.D.D. Dressers are a major innovation in truing Diamond and CBN wheels. These tools are manufactured with exotic metal formulations to give outstanding truing action compared to other methods, without removing the wheel from the machine. Wheels can be trued within .0005" without coolant. Use these tools on straight wheels, angled wheels, or wheel sides. Removing run-out increases grinding accuracy, surface finish, and wheel life. Braemar stocks 3/8", 7/16", & 5/8" SDDD Dressers for immediate delivery.