This is an airbag adapter for leakage detection devices in various piping systems. Strong sealing, not easy to leak gas. Reduce workload in a leak check. We have OBDII cars / Light Trucks / Heavy Duty Truck's, Battery Tester, Fuel Injector Cleaner Machine, Smoke Leak Detector Machine, Digital Circuit Tester, lgnition Spark Tester, Engine Timing Tool, and much more others products.