I needed an extension wand in order to clean the attic level siding of my 1-story house. I got the shorter (18-foot) extension wand. I had been rather worried, based on the other reviewers' comments about how heavy and uncontrollable it was, that as a 5'7" not-athletic middle-aged woman I would not be able to use it. But it worked out OK. I extended the wand only as much as needed, and used the nozzle one step more powerful than recommended for siding, and I paced myself. I got the job done. I could not handle the heavy wand for more than 20-30 minutes at a time. I had to plan where I was going to wash, position myself, and then press the trigger. So there was no walking around with it while the trigger was pressed, and I braced it against my body. I couldn't wash siding for a living with this, of course, or even for an afternoon for that matter. But for the job I needed to do, it worked fine.
I should also mention that I attached this wand to a Sun Joe SPX 3000 electric pressure washer. The Sun Joes's use a M22-15mm fitting, in contrast to the standard (US) M22-14mm fitting. The end of the extension wand is a 3/8" NPT male thread. The needed adapter could NOT be found locally (Home Depot, Lowes, etc) or on Amazon, but I was able to find a 3/8" female NPT thread/M22-15mm male adapter on Ebay, from a Michigan-based seller named "pressurewashingsupplycenter"

Great product. I bought the gutter attachment and it really did the job. If I had a ranch house this would be so easy to use. I bought it for my two story house because it telescopes. I'm not complaining about the product. It's perfect for what it is supposed to do. Using it at longer lengths will give anyone a workout.

Extremely heavy unit to hold up in the air for any period of time. The further it goes up, the more unwieldy and out of control fire-hose like it becomes... A single pole that was 24' or even a double pole with two 12' pieces would have been way better weight and control wise

This tool really worked great allowing me to clean the inside and outside of the gutters from the ground. Coupled with Powerfit PF31052B Gutter Cleaner Attachment it was easy to blast the dirt and leaves out of the gutter. I started at the downspout end and worked my way down the gutter rinsing all the dirt out of the gutter. Finally, with a 40 degree tip, I washed the outside of the gutter.

The wand itself has a 3/8" female NPT thread at the valve end and a M22 male thread at the tip. It also ships with a 3/8" male quick connect to 3/8" male NPT connector and a 3/8" male to M22 male connector as well depending on the hose type connected to the pressure washer. I wish I knew this before ordering because the description is not clear. There is also a short tube with a slight bend that has a M22 female thread to a 1/4" quick connect for standard pressure washer spray tips.

Not sure how durable it will be, but worked well for me. I did not buy the belt and I found it quite manageable, more so than other reviews suggested.
To put this into context, I'm 62 years old and had shoulder surgery two years ago. I never was mr muscle, and I don't lift weights or work out. So I'm a bit bemused by all the people who say they couldn't handle it.