KOVEA “Push and Turn” (PAT) Adapter (KA-2004) is used for blue Camping Gas-type canisters with a click (rather than screw thread) connector.
These canisters are popular in France, around the Alps and numerous European destinations.
The KOVEA PAT Adapter works with remote canister stoves like the KOVEA Spider (above). It also works with canister-top stoves like the KOVEA SupaLite Titanium (below).
The KOVEA PAT Adapter is very easy to attach to a click-type gas canister. You just have to press firmly down, and rotate the bottom section clockwise.