Wiper Blade Refill, Beigaon 28 inch Silicone Wiper Blade Refill for Replacement Windshield Wipers, (Strip Height: 11mm, Width: 6mm) Fit for Frameless Wiper Insert, DIY Cut to Size(Pack of 2)

You can just replace the insert. Instructions how on the 3rd post of the linked thread: https://www.bimmerpost.com/forums/showthread.php?t=2082268 I’ve bought and installed these inserts. Work fine: https://a.co/d/0irInZ8x