Hello, Franco! Thanks so much for the review. I'm glad to hear you're enjoying the Zero Blade! I promise removing and attaching the Zero Blade becomes really easy once you've done it a few times. The trick is to make sure you have the micro-adjuster set to 1.9mm before removing/attaching either blade. And don't try to line up anything on the back of the blade with the metal prongs inside the mouth of your trimmer. Instead, find the black tab that sticks out of the bottom of the blade, tuck it behind the lip of your trimmer, and press forward to get it to snap into place. Please reach out to us at Support@BrioPG.com if you have any questions, or need any help!