POWERTEC 70106 4-Inch Y-Fitting Dust Hose Connector Overall dimension: 9-13/16-Inch x 4-1/16-Inch x 8-1/4-Inch; Provides airtight friction fit Tough, durable ABS plastic material Simple and quick to install Provides a multitude of applications Three 4-Inch nominal ends measure 3-61/64-Inch O.D. and 3-3/4-Inch I.D.