Made in the USA, The Gator Lock Coupling by Green Leaf Inc is available in different sizes ranging from 1/2? to 3?, and in eight universal configurations of fittings involving male adapter, female adapter, hose shank, plug, cap, and many NPT thread variations. The Gator Lock coupling which is a patented positive locking system to keep the arms from unintentionally coming open from pump or transport vibration is a popular fitting because of this safety feature. Green Leaf Inc?s Gator Lock is a reliable way of connecting and disconnecting equipment that transfers fluid like sprayers, pumps, hoses, and many other applications.