Park Tool TNS-4 Deluxe Threadless Nut Setter KWT 10t-start cassettes provide more efficiency

10t-start cassettes provide more efficiency and more time in the big ring

Helping the midsole to compress and expand faster

with tightly spaced blocks and in-block sipes provide the ultimate in traction and high rolling efficiency

Specifically designed for Carbon Fibre parts

Park Tool TNS-4 Deluxe Threadless Nut Setter KWT 10t-start cassettes provide more efficiencyThe 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. Specifications Compatible with 1" and 1 1 8" headset systems that use a standard M6 threaded star fangled nut Replaceable set screw part #822