Top critical review
Good, but not especially fine.
on 25 July 2015
First up the good stuff, this is great value, and the paper looks pretty good. It came next day, so very convenient.
Now the bad stuff: This particular Amazon page description doesn't say that it's 1200 grit (thankfully other reviews do). Weirdly though, even though it says "1200" on the back, it's rougher than some P600 I got in a mixed set from Robert Dyas. It's finer than the Silverline 600 grit, but still much rougher than I expected. I'm working with glass, and this stuff definitely 'clouds' glass rather than polishing it.
All that said, whilst it's not going to work on the job I wanted it for, it's plenty good enough for a "between coats" sanding, or other fine-ish work.