Constructed from durable materials our 5 Short Y 3 Way Connector 3-Way 45 Degree Coupling/Elbow/Double offers long lasting reliability. Also designed with low internal friction to insure you get superior air flow throughout your central vacuum system which also means low vacuum maintenance for you. Our 3-Way 45 Degree Coupling/Elbow/Double spigot should be used with similar central vacuum tubing with 2" diameters. Our coupling is designed to effectively produce maximum airflow by allowing two pipes to connect at 45 degrees to a straight third pipe. Including: PowerStar Pullman Riccar Simplicity Vacuflo Vacumaid Valet WalVac ; all other central vacuum cleaner system brands.