Adjustable Top Manhole Roller Hose Guide Category_Default Category Products Root Saws and Cutters you have a full circle Category_Default Category Products Hydro Jetting Tools Jet Vac Truck Tools you have a full circle of approximately 30 inches of 3 8” thick clear polycarbonate for safety Down the middle of the guide is a hinged aluminum door that you open up to insert your hose and nozzle together between the arms so it can rest on the roller Once the guide is mounted on the manhole simply slide it to its most open position so the opposing “l” brackets on each end grab under the manhole rim The complete unit is steel and once it is finished at our factory we have it zinc dipped for corrosion resistance and to give it a long life