The Canned Airlock works as a safety for the trigger on your canned air valve. Never worry again about spraying accelerant inside your kit. The one-handed operation ensures that you can use your canned air just as you would normally. The Canned Airlock stays on your valve so you can swap to a new can anytime. If you are on a more rugged job, the built-in zip tie channel gives you additional peace of mind that your can will stay locked until you need it.