Park Tool - SW-18 Internal Bicycle Nipple Spoke Wrench: 5.5mm hex socket

The SW-18 has a 5.5mm hex socket. It uses an extra long (3.25”/85mm) spoke wrench socket to fit internal spoke nipples found on many deep section aero rims. Featuring our dual density, ergonomically designed screwdriver handle.

Note: The DT 'pro-lock' nipples are a 5.5mm sizing