... range,less heat, OEM is ok. Diamond dish-shaped knife polishing wheelsPolishing hard alloy and other tools;Durable,wide range,less ... Wheels, Gun Drills, Diamond Oilstone, Grinding Paste, and Grinding File.We factory was established in 1999. We already have more ... Wheels,Gun Drills, Diamond Oilstone, Grinding Paste and Grinding File. We factory also have passed ISO9001:2000 quality management system ...