TANG NUT TOOL, FOR USE IN REMOVAL AND ORTIGHTENINGSPLIT BRASS TANG NUTS USED IN SOME VINTAGE FIXED BLADE KNIVES (USUALLY STACKED LEATHER SPACERS, STAG, AND PLASTIC ). I HAVE HAD THESE MADE BY TOOL AND DIE MAKERS RIGHT HERE IN THE USA. (KANSAS CITY, MO.) THESE ARE 2 1/4\'\' IN DIAMETER AND .062 OR 1/16\'\' THICK. FIRST WE WATER JETTED OUT MY DESIGN THEN WE GROUND THE EDGES, SLOWLY, USING A JIG. THEN WE HEAT TREAT THESE TO A 48 ( + ) ROCKWELL HARDNESS. WE ACTUALLY WENT THROUGH THREE DIFFERENT METALS, UNTIL WE CAME UP WITH THIS DESIGN. TRAIL AND ERROR LED US TO THIS TOOL. I HAVE USED THIS TOOL IN OVER 50 OF MY OWN FIXED BLADES AND NOT ONE FAILURE TO DATE! I HAVE BEEN COLLECTING VINTAGE FIXED BLADES FOR 20 PLUS YEARS, AND UNTIL NOW I HAVE HAD TO ALWAYS MAKE MY OWN TOOL USUALLY BY USING A DREMEL TO CUT OUT SLOTS IN A SCREWDRIVER. EVERY MAKESHIFT TOOL I EVER MADE ENDED UP BREAKING OR GETTING LOST. OUT OFFRUSTRATION I FINALLY DECIDED TO MAKE MY OWN TANG NUT TOOL. THIS IS A NO FRILLS TOOL, NO STAMPING OF MY NAME, NO SANDBLAST ANDBLUING, THE ONLY EXTRA IS I DID HAVE AKEY-CHAINHOLE PUT IN IT AND KEPT THE COST DOWN ENOUGH TO OFFER CHEAP SHIPPING ANYWHERE IN THE USA. MUST HAVE A US ADDRESS! THANK YOU VERY MUCH. TANG NUT TOOL, FOR USE IN LOOSENING OR TIGHTENING BRASS SPLIT NUTS ON VINTAGE FIXED BLADES, USUALLY STACKED LEATHER, STAG, OR BAK O LITE HANDLES. I HAVE MADE/IMPROVED A TANG NUT TOOL OUT OF SHEAR DESPERATION, AS I AM ALWAYS LOOKING FOR A WAY TO REMOVE THE POMMEL ON A STACKED LEATHER OR STAG HANDLED KNIFE, USUALLY TO ADD OR CHANGE LEATHER RINGS AND SPACERS.OVER THE YEARS, I HAVE MADE SEVERAL TOOLS, USUALLY OUT OF FLAT BLADED SCREWDRIVERS BY TAKING A FILE, OR DREMEL TO THEM AND CUTTING A SLOT. BUT THERE ARE SEVERAL SIZES OF BRASS SPLIT NUTS, AND I ALWAYS SEEMED TO LOSE OR BREAK MY SCREWDRIVER THING.I NOW HAVE, AFTER SEVERAL FAILED ATTEMPTS, A SOLID, STURDY TOOL THAT WILL FIT MOST TANG NUTS. NOW ON THE MARKET, FIELD TESTED APPROVED....