Burnish foil, clean up polish and grout around solder/came, and open lead came.
It also has an included hole to make a jump ring utilizing 16, 18, or 20 gauge wire.
Insert the end of a 16, 18 or 20 gauge wire into the hole above the pocket clip. Wind the wire tightly around the top of your FID'L STIK. Now, whenever you need a ring just snip it off with wire cutters.
