Park Tool SW-14C Spoke Wrench Shimano
The two-sided SW-14 features 4.3mm and 4.4mm openings to fit Shimano Wheel System nipples. These are the spoke nipples located at the hub flange. The wrench is approximately 125mm long.
If you have ever worked on flange-mounted nipples, then you know my pain. This wrench does a find job of managing that particular conundrum. Four stars because it only give you half a turn when you're working on rim-mounted nipples.