Cool, so that’s how you remove or tighten up those ring nuts on power and other connectors on ground radio without galling them up! Just have to decide if it’s worth $22 to do that. Have done way too many by placing punch in the slot and hitting with a hammer to break free and reverse to tighten.

Ray F/KA3EKH

eBay item 224809009976

https://www.ebay.com/itm/US-Military-Cannon-Connector-Plug-Spanner-Wrench-Set-5120006589805-/224809009976

Not mine, no connection to the seller