I ordered these because I wanted the release buttons to be longer. Installation was easy and hassle free. They provide you with an adhesive that you apply to the L1, L2, R1, R2 buttons, then place the body of those buttons on top of them and press down to make sure they are seated and securely attached. After playing it for a few days, I can say that I feel a lot better, especially on the trigger buttons. The longer cup I've attached allows me to reach my finger a little further back and push it all the way down with minimal effort!