There are two printable parts here. The first should be printed with supports. It bolts to your shapeoko and you run your vacuum to one side of it. The other fitting is for a hose with a 1" ID this runs to the print head of your shapeoko. The second piece should be printable without support and it slides into the the hose on the print end side and then should be zap strapped to your print head. this allows me to cut wood dust free.