Sharp deburring blade to remove burs in drilled holes, knife sharpening burs, stamped metal templet and even in rounding plastic . Its 3mm diameter fit securely in a pin tong item reference 88101014. Wear safety goggles to protect eyes from metal burs. This single bevelled blade is very sharp and fitted to a pin tong its hooked shoulder thumb rest is suited for wood chipping and miniature carving.