Large Diameter Shank Couplings are designed for use with large diameter lay flat hose in agricultural, energy, and industrial applications. A lightweight aluminum grooved shank, easily installed, field repairable, and reattachable coupling. This coupling consists of a hose shank and a segmented clamp collar. One end of the shank is machined to accept the mating collar. The opposite end has a machined groove. The clamp collar is easily assembled to the hose using a hex (Allen) wrench. Large Diameter Shank Couplings can be used with PVC/Nitrile Hose or PU hose.