For how to install this upgrade see this video
This handy add-on replaces the existing basic button on the iKegger 2.0 Tap system and has two uses.
If twisted in one direction it prevents the button from being accidentally pressed, perfect while transporting your filled kegs to a mate's place, from a brewery, or if you have kids going into your fridge!
If pressed down and twisted in the other direction it locks the button down. This allows you to use the push-fitting compatible spout on the iKegger 2.0 to fill your keg or to use a remote or external tap (like for a kegerator or a pluto gun).
Note: This is just the button upgrade for the 2.0 tap system, it does not include the 2.0 tap system that screws into the keg that it is pictured installed on.