Trueing Hed Jets - Internal 5.5mm Hex Key?

I’d like to true my HED Jet 9s and I’m looking for a Internal 5.5mm Hex Key tool. Preferably one that I could find on Amazon. Does anyone have any suggestions?

Thanks!

5.5mm is a little strange. Sure it’s not 7/32?

I have a 3-Way Park Tool internal nipple wrench. Work fine redishing my Jets when I upragded the hub to 11s.

The one I have is made by Wiha, a German (I think) tool manufacturer. I got mine from HED. I called them a they sent it to me. I can’t remember if they charged me for it, but I don’t think so. That was a few years so you YMMV.

Icetoolz makes a 5.5mm socket that works perfectly with Hed Jets. I used to have jets, but still have the tool. The seller on amazon is overcharging for it, though.

The Park Tool SW-18 Spoke 5.5mm Wrench SW18 Internal Hex Spoke Nipple Wrench, should work fine, but I would call HED to confirm, since I read the hex part might be wider than the holes of some rims. Not sure if HED rim compatible.

https://www.amazon.com/Park-Tool-SW-18-Spoke-Wrnc/dp/B004KZZZHO/ref=sr_1_1?ie=UTF8&qid=1471222794&sr=8-1&keywords=Park+Tool+SW-18+Spoke+5.5mm+Wrench+SW18+Internal+Hex+Spoke+Nipple+Wrench

http://www.parktool.com/...heel%20&%20Spoke