Some letters on my keyboard have been erased and more are added every month. I put off these replacements for a while as I had several concerns: They wouldn't feel right under my fingers; it will be cheap paper, and it wears out quickly; the price was higher than I expected; They fall off after little use. These are vinyl key cases so are very durable. The sticky part seems to stick well, but not like super glue if you accidentally drop it in the wrong place. The black background and white lettering are the right balance, making them easy to pair with other buttons that don't need a label (yet!). See photo. In general, that's exactly what I wanted. Can't comment on the durability of these letters yet, but they appear to be good quality letters that will last a long time.
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