look at those fingers!
image from the url you posted
A place to ask bicycle repair questions, and for bike shop monkeys to share advanced non commercial wrenching resources (no YouTube self promotion). This is only for repair related topics.
look at those fingers!
image from the url you posted
I think it worked, I trust that guy more than some clean hands. He's busted a knuckle before
I can't find an off the shelf tool for that. Pedro's universal crank puller has an 8mm built in and the handle is removable leaving a larger hex for a wrench. Not sure if that is a 15mm hex head though.
The Park Tool CCW-5 might work too. The 8mm allen/14mm socket part can be somewhat easily knocked out of the handle and carried alone. I can't remember what size the remaining big hex is.
Run over to your LBS and measure up either of those.
Thank you for the ideas! I wanted something slightly more purpose built, but your head's in the right place