The two hex parts seem like one piece and it doesn’t feel like it’s threaded in to the hose.
It looks like is Husqvarna part no. 584825501 https://powermowersales.com/husqvarna-584825501
The two hex parts seem like one piece and it doesn’t feel like it’s threaded in to the hose.
It looks like is Husqvarna part no. 584825501 https://powermowersales.com/husqvarna-584825501
You hold the inner hex with a wrench.
The outer hex will turn off with another wrench.
The silver part with the wrench marks is a crimp fitting to hold the two hexs onto the hose. Do not use to prevent turning.