The reusable Smoke Wizard Pop-it Capless Adapter, No. GLD052, fits the new double-door capless fuel necks. Simply pop it on, twist to seal and connect any leak detection device to test the system. This tool works well for EVAP tests, especially pressure/vacuum decay and smoke testing. It saves money and waste by never needing costly, messy throw-away seals, according to the company. The durable Pop-it Capless, made of fuel-resistant substrates, is backed by a five-year warranty.