Product review (2 stars): Planned obsolescence
This is another example of planned obsolescence. I bought this item just 7 days short of a year ago and they have failed. The original ones were all plastic so I thought that having the metal insert centers would help them last. Nope!! It looks like no matter which ones you buy they are all designed to fail. My rating is low because the advertise these as heavy duty and they only lasted just under a year.