Increase your overall productivity by performing simultaneous repairs with this adapter. It features a shutoff valve so you can maintain vacuum and pressure on the damaged area. The readings are verified with an easy to read built in gauge. These adapters are sold individually, but consider purchasing two for maximum versatility during your windshield repairs. The AEGIS Windshield Repair Fixture and chambers (FIX2006 and FIX2005) are sold separately. Increase your business by doing more windshield repairs in the same amount of time.