The Extremerate Clicky hair trigger kit is an evolutionary custom kit that advanced gaming functionality to your existing PS4 controller. With it, you will have a faster trigger response, get a huge advantage in games such as shooting. Shoot faster, great assistant for FPS / TPS players! Product Feature: Specially designed for PS4 controller. ONLY compatible with JDM-040/JDM-050/JDM-055 PS4 controller. NOT suitable for racing games. Clicky trigger kit can greatly improve the function of the PS4 controller shoulder buttons. Just press down 0.6mm, the function of L1R1 can be triggered, save1 times the distance. The distance of R2L2 can be shortened by 4 times, you can shoot by gently down 1.5mm. These accessories can help you fire faster and save valuable time during fast FPS or shooter games. Easy to install, need to disassemble the controller. Get an installation video guide on YouTube by searching "eXtremeRate PS4 Clicky Trigger Kit". Package Includes: 1* Clicky FPC board 1* Built-in Clicky button kit 1* Blue prying tool 1* PH00 Screwdriver 8* Screws Note: The controller, trigger button and other parts are not included!