Product review (5 stars): Get the wrench too.
Buying this part was worth it as it helped to prevent me from having to buy a whole new washing machine. It arrived on time and installed relatively easily. It has been in use for a few months and has held up well with no issues.
One thing I would suggest, is that you get the wrench made to remove and install these. I tried unsuccessfully to remove the old one with the tools I had. I finally gave in and bought the wrench and 2 minutes after it arrived I had the old nut off and the new one on.