If you still have analog stick buttons, that's fine. But if you're trying to replace them to hide that shiny plastic, I wouldn't recommend them. They are not very dense and slide on sticks. Just like with a condom, you don't want the caps to slip and fall off when actually being tested. And while they can be textured for fun, I wouldn't recommend them. I've only tried them on the PS4 Dualshock controller, so it might be better suited to a different type or controller for a different system.
Upgrade Your Gaming Experience With OSTENT Li-Ion Polymer Battery Pack Replacement For Sony PSP 2000/3000 PSP-S110 Console
11 Review
Game console Sony PlayStation 3 Slim 3 320 GB HDD, black
74 Review
Wirelessly Connect Any Controller To Your Gaming System With 8BitDo USB Adapter 2 Converter Dongle
18 Review
Wii Guitar Hero World Tour - Independent Guitar Controller
11 Review