Safe, fool-proof, and compliant with recycling standards, CrunchIt punctures Jetboil Jetpower (and certain other) butane fuel canisters, making them recycling bin ready. Because there's nothing less efficient than throwing things away. Made from lightweight and rugged stainless steel, this tool is pocket-sized for convenience and can double as a bottle opener. Screw it onto your empty gas canister to vent any residual fuel and puncture Jetboil's Jetpower and other butane fuel canisters for recycling.