POWERTEC 70104 4-Inch to 2-1/2-Inch Reducer
The POWERTEC 4-Inch to 2-1/2-Inch reducer allows you to reduce form one 4-Inch hose down to one 2-1/2-Inch hose. The step-down feature increases air velocity near the machine. This also an adaptor for Shopvac and Sears machines.