Milwaukee HOSE AND ACCESSORY ADAPTER KIT is designed to provide seamless connections between Milwaukee hoses and the most common vacuum accessory and hose sizes. This versatile kit includes three essential pieces: a 2-1/2" to 1-7/8" Accessory Adapter, a 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 allow you to easily connect different diameter Milwaukee Vacuum Hoses and Accessories, making your vacuum setup more flexible and efficient. Each adapter is clearly marked with the diameters it connects, ensuring quick and easy identification during use. Model Number: 49-90-1991