Park Tool TNS-1 Star Bike Nut Setter for 1 and 1-1/8 Threadless Headsets

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.

The TNS-1 is for 1" and 1-1/8" headset systems.