About Park Tool Deluxe Threadless Nut Setter (TNS-4)
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.

Features

Compatible with 1" and 1 1/8" headset systems that use a standard M6 threaded star-fangled nut

Replaceable set screw — part #822

About Park Tool
Park Tool are the world's largest bicycle tool manufacturer. Located in St. Paul Minnesota they have been designing and manufacturing bicycle specific tools since 1963. Their dedication to quality and innovation have gained them the reputation for producing the best bicycle tools in the world.