Product review (5 stars): Fits the drain in my sink perfectly and cleans effectively!
I have a sink in my house that seems to have a consistently nasty pipe.  I'm not sure why, but it drove me nuts trying to figure out a way to clean it out.  Pouring bleach down it didn't work- twisting paper towels and attempting to clean it out a bit that way didn't make much difference in the smell-- but this little brush works fantastically.  It fits perfectly into the drain and I'm finally able to get it cleaned out nicely.

Having the right tool for the job does matter. :)  This one is well made and does it's job with little effort.  Very much worth the price!