The MILWAUKEE® Hose and Accessory Adapter Kit allows Milwaukee hoses to connect to the most common vacuum accessory and hose sizes. The kit includes three pieces: 2-1/2" to 1-7/8" Accessory Adapter, 2-1/2" to 2-1/2"-1-7/8" Hose Adapter, and a 1-7/8" to 1-7/8" Hose Adapter. These step adapters connect different diameter Milwaukee Vacuum Hoses and Accessories. Each adapter is marked with the diameters it connects between directly on the tool for easy identification.