I will disagree.....I purchased a set for my planter, meter and insecticide drive, and started replacing the oem as they wore out.   They lasted quite a bit worse that the oem.  I am glad I saved the old hardware because I bought new sprockets and bushings from shoup and have had much better longevity than the plasic rub setup.  The brand new shoup updates hit the trash can.  Wish I would have known that someone liked them, they could have had them for the price of shipping.
Edited to say....same problem as "Jedeka"