KMC's MissingLink connecting link makes the installation and removal of KMC 11 speed chains simple and easy.
Removing your chain for cleaning makes a lot of sense and greatly simplifies the process - but before you proceed, make sure you are using a re-usable master link. Many are designed to be single use. This specific KMC re-usable MissingLink is designed to be installed and removed repeatedly.
Installs easily with no tools required. To remove, use KMC master link pliers, or equivalent tool from Park Tool or other brands.