Really good!
I already own an original Creality magnetic bed and I want a replacement mat to swap. So I want to let the original magnetic sticker on the bed and simply swap the flexible top.. Be aware that just didn't work. At least, not completely. It's not a direct fit because the magnetic field does not perfectly match. So if it's a brand new installation, I think this product can do a great job. But in my case, I don't want to remove the original magnetic bed (the part that came with 3M sticker). So this is not a "Creality 3D magnetic build surface". It's compatible with the bed but not with an original magetic build surface.