Warning: The replacements require soldering tools and skills. GuliKit TMR replacement joystick is specifically designed to fit DualShock PS4 Controller. For the disassembly process, you can go to iFixIt to learn about the process instructions or watch our video. For PS4 DualShock calibration: Use the third-party open-source calibration tool at dualshock-tools.github.io to calibrate the joysticks. Comes with KK Ring joystick caps, which easily replace thumbstick caps. Prior to launching we ran extensive testing via our support server and have had feedback regarding the installation process and best practices for successful results from all skill levels of our community. Shop with confidence and enjoy top customer support from AKNES. Contact us if you run into any issues and we'll be happy to assist you. Read more about us on our store page. Prior to launching we ran extensive testing via our support server and have had feedback regarding the installation process and best practices for successful results from all skill levels of our community. Shop with confidence and enjoy top customer support from AKNES. Contact us if you run into any issues and we'll be happy to assist you. Read more about us on our store page. AKNES GuliKit TMR Electromagnetic Joysticks Replacement for DualShock PS4 Controller, Thumbstick Grips for PlayStation 4 Controller, Thumbstick Caps Included