Durable Construction: Crafted from anodized aluminum, the Complete AN Hose Test Fitting Kit offers durable and long-lasting performance. Its blue finish adds a touch of style to your toolbox. Comprehensive Set: The kit includes a range of fittings, from -3 AN Male through -16 AN Male, ensuring compatibility with a variety of hose sizes. It's a versatile tool that caters to all your hose testing needs. User-friendly Design: The test fittings are extremely easy to use. They simply screw into common AN hose ends, allowing for a hassle-free testing process. Leak Detection: By allowing you to pressurize hoses with air and submerge them in water, the kit makes it easy to detect leaks before they can cause costly damage. It's an essential tool for preventative maintenance. Inclusive of Necessary Components: The kit comes complete with fittings of various sizes and includes steel Schrader valves for pressurizing hoses. It's a must-have for every toolbox, whether for professional or personal use. These hose test fittings simply screw into common AN hose ends and allow you to pressurize with air and submerge in water. This complete kit comes with one of each 3, 4, 6, 8, 10, 12, and 16 AN fittings with steel Schrader valve. Easy to use. Uses common Schrader valves to pressurize hose. Detects leaks before they cost you. A must for every toolbox.