Craftsman 3 in. L X 3 in. W X 1-1/4in. to 2-1/2 in. D Wet/Dry Vac Hose Adapter 1 pc

The CRAFTSMAN 2-1/2-inch to 1-1/4-inch Adapter is easy to use and allows you to use smaller attachments with larger shop vacuums for things like dust collection. Just slip one end into your wet/dry vac hose and the other end is ready to accept smaller hoses and attachments designed for smaller vacs.