XROLAND High Pressure Washer Hose Fittings - Quick Connect Twist Coupler for Car Washing, Home Cleaning & Outdoor Use - Durable Water Pipe Connector for Pressure Washer Accessories (Ideal for Driveway, Patio & Vehicle Cleaning)

I ordered three of these to ensure I had them in hand in case of future problems. However when I installed the first one , it would not tighten down and of course blew off the hose. There is no way to ensure that the part is secure on the hose. Waste of $&&&&time