Product review (1 stars): He said they were not oem how did I miss it ??
Problem ; this happens to me occasionally wanted oem but got generic. I don't know how I did it he says it is after mkt .But  wear pads must be of  Teflon as is oem or you will not see good life from them. They are blue but probably made of polyethylene. If you get stuck with these you can put 2 on each side doubled up or buy oem and put the teflon ones on top of the polly;doubled.