The Jetboil CrunchIt Tool is their patent pending recycling tool that safely vents and preps butane canisters for the recycling bin. Safe, foolproof, and compliant with recycling standards, CrunchIt punctures Jetboil Jetpower (and certain other) butane fuel canisters, rendering them recycling bin ready and headed for re-melt and reformation. Do the right thing – reduce your carbon footprint with Jetboil and Jetpower fuel, and Crunch your can. Empty fuel canisters are recyclable as Tin/Steel.