My Ender 3 Pro came with the magnetic print surface a lot of people online are making a fuss about. No more having to use a scraper to get your print off the bed. Just remove it, flex it and peel off the print! Magic! Yeah, for the first 20-30 prints. Then, I noticed that there were creases in the sheet that would not self level. Printing a single layer calibration print showed various high and low spots on the magnetic sheet. So, I purchased this glass bed upgrade on a whim. After all, glass is pretty flat, right? Wow, was I surprised how good this bed was! I must have about 50+ prints of various sizes and print times done and every one of them is flat and absolutely ZERO bed adhesion issues. This glass sheet has a silicone carbon coating on it so no need for hair spray or glue stick. The only thing you need to do is keep it clean and let the print completely cool when done and it will pop right off. I used small binder clips to hold it to the heated bed and it just stays. Also, I haven't had the need to change the bed temperature for PLA after this upgrade. All-in-all a solid purchase.