Park Tool TNS-1 Threadless Nut Setter For 1 Inch / 1-1 / 8 Inch Forks

The Threadless Nut Setter is used to install star-fangled nuts found on threadless headset systems. Thread the nut onto the TNS-1, 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.