I had no idea how to replace the PS4 controller joysticks but after some research on You Tube I found it wasn't that difficult. I didn't want to just put "covers" on my controller joysticks because they were worn out and really needed replacing. To replace the joysticks, you need to disassemble the controller into several parts. I decided to give it a try. With a little patience and research, you'll find it's not that difficult and worth the money spent on these replacement joysticks. Contains 3 pairs (2 black, 1 green). I have 2 controllers and have replaced the joysticks on both with black replacements. After about 2 months of infrequent use, the joysticks are already showing signs of wear and may soon need to be replaced. I can be overly aggressive with the controller I carry, but original Sony joysticks have lasted for years. I'm glad I have an extra set of green joysticks instead of the main controller, but I just hope they last a little longer.