Fire Hose Tester with Pressure Washer Connection Size 1 1/2 in Connection Type NST For Fitting Type Hoses up to 6 in Diameter and 300 ft For Maximum Hose Diameter 6 in For Maximum Hose Length 300 ft Product Type Hose Tester Material Stainless Steel Maximum Flow Rate 3 gpm @ 600 psi Includes Pressure Washer (4 Outlet) Maximum Operating Pressure 600 psi Number of Outlets 4 Standards NFPA