Product review (3 stars): We'll see.
This is the second drive coupler that I've ordered in 8 months from this seller.  The washer worked properly the first time I installed the coupler, but 8 months later was destroyed when I tore the washer apart to see why it wasn't spinning.  I ordered a second part from the seller thinking that the first attempt could have been my fault.  Hopefully the second time is the charm!