WORKSHOP Wet Dry Vacuum Adapter WS25055A Wet Dry Shop Vacuum Adapter Combo Kit Universal shop vacuum hose adapter kit includes 3 wet dry vacuum adapters. 2-1/2-inch to 1-7/8-inch adapter, 1-7/8-inch to 1-1/4-inch adapter and the 2-1/2-inch hose to hose connector are wet dry vacuum adapters that can work together or separately to fit most needs. Universal shop vacuum adapters provides flexibility by allowing users to continue to use the 2-1/2-inch diameter hoses for larger debris collection and maximum airflow, but use 1-7/8-inch diameter or 1-1/4-inch diameter wet dry vacuum attachments and shop vacuum accessories. The best wet dry vacuum adapter for your application will vary. Also see the WS25007A and WS25011A. Suck It Up. Get It Done. with WORKSHOP Wet Dry Vacs WS25055A wet dry vacuum adapter helps get more use out of your shop vacuum