The Threadless Nut Setter is used to install the star-fangled nut found on 1� and 1-1/8� threadless headset systems. Thread the nut onto the TNS, insert into the fork stack, and tap it in with a hammer. Sets the starfangled nut to 15mm and keeps it straight. Long handle helps prevent pinched fingers Replacement Nut setter Screw 6mm Screw 822UPC/EAN/GTIN: 7634770009410