Review (4/5): Nice variety
I bought these mainly for the bands and the grade they come in. Though tbh the 600 grit is marginally smoother than the 400.
The "diamond" bits have the standard sizes, small selection. The pink stone ones are pretty nice for getting a smooth surface. The white felt ones aren't too bad for buffing. These and the pink ones and clean around the cuticle without causing any damage.
I'd order these again to get the pink or white ones again.