I just tested out this cleaning brush and it worked effectively on my shower screen as well as my group head around the shower screen. I really like the build quality of the brush and it has a good feel to it, a good grip, and a nice weight. The brush is comfortable to hold and it's easy to use and it also has a built-in baffle to block any hot water if you are running the machine while cleaning. The fit is good for my 58 mm machine. The brush bristles or thistles tend to do a great job from what I am seeing and the inner brush for the shower screen is removable meaning that you can pop it upwards out and take it off or you can also adjust it and just push it upwards should you want more contact with your shower screen. Cleaning brush seems durable and is lightweight and even has a small powder spoon on the end of the handle in case you are using a cleaning agent. 5 of 5 overall. Read more

It only makes sense that a brush for cleaning the grouphead should reflect the shape of a portafilter. With a traditional brush, it’s near impossible to scrub the area where the portafilter locks into, but this brush gets that area. We have been using it daily for about a month and it’s holding up! Read more

I didn't pay attention to the sizing, so my review will be limited to the appearance. The cleaner is very cool in the fact that you can adjust parts of it to your needs. The bristles feel secure. Read more