^ The same thing happened to the set I bought. My wife has the truck now, and she got home and said the wiper “fell apart”. I went out and checked and sure enough the rubber part seperated from the blade.
And they did chatter a lot worse than my old blades. I liked them at first by after about a month I realized they sucked. Having them fall apart the first time they had to move a little heavy snow didn’t help my opinion (my wife said she cleared almost the entire window before turning on the wipers).