Use your truckmount dual wand machine to run larger pressure washing tools (like this 21" surface cleaners with vacuum recovery) Pressure washing tools require high flow through 3/8" ID pressure washing hose and connections. This is an alternative to this. The flow from two 1/4" ID carpet cleaning hoses is the same as a single 3/8" This set up includes the following parts: 3/8" street Tee MXFXF two 3/8" Mip X 1/4" hex nipple one 1/4" Street 90 two 1/4" QD common to carpet cleaners.