Big Horn 11405 4 Inch x 2-1/2 Inch Two-Way Tube Coupler Adapter
Big Horn 11405 4 Inch x 2-1/2 Inch Two-Way Tube Coupler Adapter. Y-Adapter is used to branch off your dust collection line like a regular Y-adapter (connector), while reducing your branch offs down to 2-1/2-Inch. For best connection use hose clamp (not included).