I have ordered two of these quick releases for my two trigger guns.
These are great quality, sturdy and operate smoothly. I mainly bought these so I can make a quick swap between my lances and this definitely made my life easier. I have used PTFE tape instead of tread lock so I can remove them a lot easier if I need to. No leaks and they threaded on perfectly.
With this quick release, you can swap between lances without the need to turn off your pressure washer but not only that. If you are using different lengths or types of lances you will be able to use all of them with only one gun. Of course, you will need to have kew alto male 1/4" couplings on your lances to be able to do this.
I'd highly recommend getting this quick release as it can make you more efficient and your equipment more versatile.