Introducing the 2-1/2 Inch Clear-Plastic Elbow Fitting by POWERTEC. Quickly and easily expand your dust collectors hose network to more efficiently meet the needs of your workshop area. This handy fitting allows you the ability to connect 2 separate machines directly to the dust collector's main hose for optimal versatility. High-Quality Clear Plastic Construction for Easy Viewing No more guessing what's going on inside your dust collection system, with these clear Y-fittings you'll know exactly what's going on at all times. Tough durable ABS plastic ensures durability, high-performance and lasting use. Make it perfect with POWERTEC fittings - streamlined, simple to use, versatile. Clear, tough ABS plastic construction for easy viewing and durability, Compatible Size: All three 2-1/2 inch OD Y fitting nominal ends are slightly undersized to fit inside your 2-1/2" ID dust hose or port. Will not directly connect to other 2-1/2" OD ports. Outer Diameter: 2-31/64" : Inner Diameter: 2-7/32".