◆ Diamond coated file is as sharpe as the metal file and is even finer, therefore it's very suitable for wax engraving and metal detailing. Especially useful when refining and removing rough edge. ◆ Square, triangle, and flat files are often used for angular surface, while round and half-round files are for concave surfaces and inner arcs. ◆ Wide applications in removing, reshaping, and refining for metal, plastic, wax and more!
◆ For sharpening screwdriver tips. ◆ This sharpening stone is widely applied among watch repair professionals, jewelers, and makers around the world. ◆ With this Made-In-Taiwan sharpening stone, very dull screwdriver tips can be sharpened as the new ones!