Safe, fool-proof, and compliant with recycling standards, Crunch It punctures Jet power (and certain other) butane fuel canisters, making them recycling bin ready. Because there&';s nothing less efficient than throwing things away. Lightweight, rugged stainless steel construction Safely vents fuel prior to puncturing Clips onto carabiner or key ring for convenience Useful Jetboil toolkit with bottle opener and jet orifice wrench integrated into handle