Product Details These Soft Wheel polishing discs are great for polishing precious metals. They are available in the following 3 grades and can be bought individually or as a Mixed bag (One of each): Green, Medium Orange, Fine Pink, Extra Fine Mandrels are not included. You will need to use a screw mandrel fixed into your pendant drill, flexible shaft or rotary tool. Recommended speed of 5,000-7,000RPM
