WORKSHOP Wet Dry Vacuum Adapter WS25011A 2-1/2-Inch To 1-1/4-Inch Universal Shop Vacuum Hose Adapter for Shop Vacuum Accessories Wet dry vacuum adapter connects 1-1/4-inch wet dry vacuum accessories to a 2-1/2-inch wet/dry vac hose Provides additional versatility by providing a wider range of available tools and options. Universal shop vacuum adapter allows users to continue to use the 2-1/2-inch diameter hoses for larger debris collection and maximum airflow, but use 1-1/4-inch diameter when connecting smaller tools, attachments and accessories The best wet dry vacuum adapter for your application will vary. Also see the WS25007A and WS25055A. Suck It Up. Get It Done. with WORKSHOP Wet Dry Vacs WS25011A wet dry vacuum adapter helps get more use out of your shop vacuum