70104 4 Inch to 2-1/2 Inch Hose Reducer, Dust Collection Fittings for Dryer V...

POWERTEC Dust collection Reducer, 2-1/2-Inch to 2-1/4-Inch (70141)

POWERTEC 70141-P2V Dust Collector Reducer 2-1/2-Inch to 2-1/4Inch Reducer 2 Pack

Powertec 70136 4" to 2-1/2" Cone Reducer for Versatile Dust Collection

70104 4 Inch to 2-1/2 Inch Hose Reducer, Dust Collection Fittings for Dryer V...

4 In. Y-Fitting Dust Hose Connector for Dust Collection Systems

Versatile 4-Inch to 2-1/2-Inch Dust Hose Reducer for Seamless Compatibility