70147 4-Inch OD to 2-1/4-Inch OD Hose Reducer Adapter for Dust Collection Sys...

2-1/2 in. to 1-1/2 in. Hose Reducer for Dust Collection Systems

WOODRIVER Dust Connection 4" to 2" Funnel Reducer Dust Collection Fitting

Hose Reducer Adapter 4 In OD to 2.25 In OD for Dust Collection Systems 1 Pcs

2-1/2 in. to 1-1/2 in. Hose Reducer for Dust Collection Systems

2-1/2 In. to 1-1/4 In. Hose Reducer for Dust Collection Systems

2-1/2 In. to 1-1/2 In. Hose Reducer for Dust Collection Systems