
Yes, one of the five was "back to back". (I used to have a plastic injection molding machine). So I knew I had to use my thumbnail to scrape off the rest of the lining on the lip. All of them are great for different devices and slots. Next-gen design suggestion: lengthen the collar to better protect the protruding microSD card.

5-in-1 USB Camera Connection Kit with SD TF Card Reader, 3.5mm Headphone Jack, and Charging Adapter for iOS 14 Devices - Compatible with iPhone 12 Pro and iPad - SD Card Reader USB Camera Adapter with OTG Functionality
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