Unlike the standard Engine Oil Drain Valve which was designed for automobile and truck applications, the N-SERIES valve is equipped with a Nipple to enable the operator to attach a hose and drain the engine oil out of tight spots and away where access to the plug itself and resulting mess are often problems. Like the standard Engine Oil Drain Valve, this spring assisted ball valve replace standard oil drain plug making oil changes easier and saving valuable time. Also ideal for oil sampling analysis as a small amount of oil can be drawn without shutting off the engine. The N-SERIES Engine Oil Drain Valve takes the mess out of routine maintenance on industrial engines. WARNING! "N-SERIES" valves are not recommended for cars with low ground clearance. Please make sure there is enough distance from the ground. The N-Series Valves are available in various sizes. For the list, go to Sizes and Applications.