Install steps:
Use the Y screwdriver to open 4 screws on the joy con.
Use the X screwdriver to open the screw inside the joy con.
Take down the small iron.
Then take the original lock buckle out carefully.
Then put the spring into the metal lock buckle.
Put the metal lock buckle into the joy con and press the spring into the slot.
Finally,put back the small iron and the screw.Close the joy con case back.
Package include:
Metal buckle X4
Screwdriver X2