Reviewer: Donald from Del Rio, TN 01/18/2009 I've used this set for years, sold both under the Craftsman and also the OEM german labels.. I've always had excellent results with them if used within their limits. One plus is that they will conform to irregular surfaces as they abrade away. Most of my use has been removing heavy to moderate rust from cast iron tool tables, such as those found on scrollsaw, band saw and tablesaws, although I've also used these to clean up metal plane soles and cutting irons, with good results, before final touch up using finer grades of polishing materials.