They are to be used between the Hex Knob and the StarPort HD to stop the screw bottoming out in the track

1282 cubic in

Port/starboard light

pack down small

Jetboil Crunchit DIRECTOR CHAIR They are to be usedSafe, fool proof, and compliant with recycling standards, CrunchIt punctures Jetboil Jetpower (and certain other) butane fuel canisters, making them recycling bin ready. Because theres nothing less efficient than throwing things away. FEATURES 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