The Park Tool SW-14.5 Spoke Wrench features 4.4 mm and 3.75 mm openings for truing Shimano wheels. The 4.4 mm opening is for nipples located at the hub, and the 3.75 mm opening fits those at the rim. The wrench is constructed from shop-quality steel for excellent durability, and it has a comfortable vinyl dipped handle.
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Tool Type: Wheel Tools
A good price and quality spoke wrench tool, however it does not fit Shimano wheels correctly at least for series 10 (nippleas at rims) and 500 (nipples at hub). for the mall side 3.75mm, nipples are larger and for 4.4mm, nipples are small. Probably for another Shimano wheels it fits perfectly.