Park Tool TNS-4 Deluxe Threadless Nut Setter

• Installs star-fangled nuts into threadless bicycle headset systems
• Steel driver with built-in guide sets the star-fangled nut to 15mm and keeps it straight
• Long handle helps prevent pinched fingers
• For 1" and 1?" headset systems with a standard M6 threaded star-fangled nut

The TNS-4 makes it quick and easy to install star-fangled nuts used with 1" and 1-1/8" threadless headset systems. Using a durable steel driver and built-in guide, the TNS-4 perfectly aligns the star-fangled nut and sets it to the proper depth every time. The unique design virtually eliminates pinched fingers. Replaceable set screw (#822).

Fits star-fangled nuts with an M6 threaded nut. Not compatible with M10 threaded star-fangled nuts.