Park Tool SW-16 Hex Internal Spoke Nipple Wrench: 3.2mm

Sized for 3.2 mm square-shaped internal nipples Shaft length: 825 mm (3.25") Shaft outside diameter: 6 mm (0.24") Some wheels feature spoke nipples accessible only through holes on the outside of the rim. The SW-16 is specifically designed to access these hard-to-reach internal nipples. Features a comfortable dual-density handle and an extra long shaft for deep aero rim cavities.