Flexible hose to connect to 2" PVC
There are several workshop specific brick-n-mortar stores out there that also sell online. Two that come to mind are Rockler and Woodcraft. Both sell what you are looking for. Both also have solutions for the static buildup that Ed was describing. I personally use flexible hose that has a wire built into it that is grounded. My system is a 3" PVC pipe around the garage. There are gates in several locations where I can attach the flexible hose. The gates are grounded. Get yourself a free catalog from both places. Rockler and Woodcraft are pretty pricey but they have items that you will not find anywhere else.