Product review (5 stars): Easy Fix
I thought my Blender was broken until I found this little part. The blender originally cost me $100. My wife was devastated that it was no longer functional, that is until I found this part. You can't beat the price for what it's worth to say the least.  I also purchased the Removal Tool. This tool makes it easy to remove the old coupler. I looked up on the internet how to remove and replace the coupler and lets just say the rest is history. The Blender was fixed, my wife was happy and she thinks I am a genius.