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 Threadless Nut setter 1 & 1-1/8` TNS-1UPC/EAN/GTIN: 763477008008