Product review (1 stars): If you want to replace your rollers again within a year, buy these.
If you look at the picture of the one with my thumb in it you can see the gap around the bear that was wore within a year of normal use. One was sqeeking (the rusty looking one) so bad that you could hear across the house and the last one was frozen in place (I could barely rotate by hand). I would not recommend you buy these. I'm trying to find OEM ones now. :/