Product review (5 stars): At first it looked like it wouldn't fit but once I pressed out the ...
This fits extremely snug in my drain which is exactly what I wanted.  At first it looked like it wouldn't fit but once I pressed out the edges, everything snapped into place.  There is a bit of a limit to the overall water flow from what I had before, but what I had before had worn out and didn't really keep anything from going down the drain.  If the water doesn't drain fast enough, you could cut bigger holes, but I don't think you'd need to do that.  I put this in my black granite sink and it looks great...well.. as great as a drain could look.