The Park Tool SW-12 Nipple Wrench is a handy nipple wrench with two different sizes. One end is compatible with the 7 spline 6.4 mm external nipple that fits Mavic R-Sys wheels, while the opposite end is compatible with the 6 spline 9 mm external nipple that can be used for Mavic Speedcity, XM819 and EX823.
If you need to change or tighten your spokes, a nipple wrench is the perfect addition to your toolbox. The wrench is made in excellent quality, so you can quickly and easily fix the wheel and get back on your bike.
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