The Shop Vac 6-inch Metal Master Nozzle part # 9053500 is meant to be used with a 1.5" hose and interchangeable 6" attachments, such as the Shop-Vac 6” Brush Shoe # 9060200 or 6” Squeegee Shoe # 9060100.
The Shop Vac 6" metal master nozzle is compatible with 1.5” vacuum hoses and 1.5” wand ends, especially those used in contractor settings.