This Dixon 225 four-bolt Boss clamp is made of zinc-plated iron and is suitable for use with hose that has a 1-1/2" inside diameter (ID) and an outside diameter (OD) ranging from 2-4/64 to 2-16/64 inches. This two-piece clamp has four gripping fingers to engage a collar on the hose fitting and ridges on the underside of the clamp sections to anchor the coupling to the hose. This Boss hose clamp is suitable for use in air and water service.Hose clamps attach tubing and hoses to fittings to prevent flow leakage, or are used for hose or wire mounting applications. They come in a variety of designs to distribute uniform pressure over the circumference of hoses to bind them to fittings. Other hose clamp types are used for mounting, strapping, clamping, and positioning hose or wire. Hose clamps are suitable for a large number of industries and are commonly used in industrial, electronic, and automotive applications.Dixon Valve & Coupling Company manufactures pipe and hose fittings and accessories. The company, founded in 1916, is headquartered in Chestertown, MD.