I have the set in white.
Spamaray is wrong, they come with both ISO and ANSI Enter/backslash. So you can use it on any ANSI board just fine.
They are very thin doubleshot PBT. I generally like the sound of thin caps but even so, these are pretty meh. I'll stick with my EpicGear ABS, thanks.
But you can get the white set for around $8 AUD, so if you're doing a cheap-as-possible build or something, these will be just what you need. Or you can spend a bit extra and get the YMD PBT blanks.