Product review (1 stars): Cheep knock-offs - will fail within months.
Do not purchase these. I did, and they worked for five months and then two failed. They are knock-offs of the OEM (original equipment), and are based on an older design that the OEM has updated many times because this design didn't work. Given the labor costs/time to take apart the dryer to reach the rollers, spend the money for the actual (real) OEM rollers. The OEM rollers I got to replace these were are least twice as heavy, have a vastly improved profile, and are whisper quiet.