You are lucky, we already read all of its comments !

And its first comment is the following

Thanks for this video.  Very helpful.  I love the nozzle clearing tip. I have been using the Black one for about a year.  Had a leak in my flushometer and the super was "dragging his feet" on the replacement so, Flex Seal bought me some "no leak" time until he finally did the repair.  It's great that it comes in clear now.  I just picked a clear one up in CVS tonight.