Product review (3 stars): Buyer beware: This kit is lacking a piece. ...
Buyer beware: This kit is lacking a piece. It does not include the o-ring that goes at the end of the shaft. (Shaft--the item that has a groove for the o-ring and is pointed at the end.) My spouse and I could not remove the original one without destroying it, because it was old and lost its pliability. We ordered the o-ring and have to wait two more days for it to arrive. UGH. So, be sure to order the o-ring! Don't assume that your old one will come off. (Like the videos in YouTube seem to suggest.) The o-ring is a $4 part and the part number is WE1M461.