Bought the wrong size but still enjoy it.
I bought the 12mm dilator and I have to say it was much bigger than I anticipated, the 12mm size is definitely for experienced sounding as it is a step up in comparison to other sounds that I have used. I would definitely recommend using a smaller dilator for a little bit beforehand to prepare the urethra for a much larger one as it will most likely be very painful if you haven't stretched the urethra before using the 12mm one.
It definitely requires lube unlike other dilators I've used due to the size, with smaller dilators I usually don't use lube as pre cum is enough for the dilator to be inserted into the urethra with no discomfort but I was unable to insert the 12mm into the urethra with just pre cum unfortunately.
The dilator is very smooth, I am a little bit unhappy about the total length of the dilator as it is only 7 inches, however this could differ for you depending on how you like to do urethral play. Personally I like to go deeper than the penis shaft length so the length being only 7 inches is a bit of a downside for me personally.
The toy is very easy to clean, boiling water and soap is all I use to clean urethral dilators. Make sure that you clean the toy before you use the toy.
Overall I would recommend most likely recommend this dilator for experienced urethral play, great product but I wouldn't recommend this for beginners.