Review on eXtremeRate Carmine Red ThumbsGear Interchangeable Ergonomic Thumbstick for PS5 Controller & PS4 All Model Controller - Adjustable Joystick with 3 Height Domed and Concave Grips by Lindsay Erdman

Pros: Easy to install. Works perfectly with PS4 Kontrol Freeks. Magic wand. (If you play a lot you know what I'm talking about). The ideal size is maybe 2mm higher than the original PS4 height. Xbox equivalent. Nice and grippy, concave and curved textures. The vertices actually stay on very well with the adjusted friction. Cons: I'm not sure how long it will hold the set friction with frequent changes of tops.