Fulton 4 inch to 2 1/2 inch off-set Y Junction Fitting for 4 inch Hose to 2 1/2 inch Hose
The 4" to 2½" - Y - fitting is used simply to branch off your dust collection line just like a standard "Y", only this fitting reduces your branch off down to 2½". Hose clamps are required for proper connection (Clamps sold separately)