Item # UNR0012
Unior Shimano Spoke Wrench $7.19
Not unlike some other high-end wheel manufacturers, Shimano developed its own rim/nipple interface for many of its high-end bicycle wheels. So, to true or service these wheels, you'll need a special spoke wrench like the Unior Shimano Spoke Wrench.
steel, plastic coated
Open End Wrench:
tuning your wheels