Spoke plug wrench (4.6mm) to suit Shimano WH-M975.
Shimano Part Number: Y4CK19000. One end of the tool turns the spoke plugs, the other has a slot with which to hold a bladed spoke in place to prevent it twisting (you'll need two of these tools to be able to do that). Suits hex-shaped spoke plugs (use a different tool for Shimano's newer square-shaped nipples and rim plugs). Shipping Weight: 11g.