Chicago Clamps and Couplings, also known as Universal Air Hose Couplings, are versatile, quick-connect fittings used primarily for low-pressure air and water applications. These couplings are designed with identical head profiles, allowing any two fittings of the same size to connect regardless of gender — simply twist and lock. Constructed typically from malleable iron, brass, or stainless steel, they offer secure, leak-free connections for compressed air lines, construction equipment, pneumatic tools, and industrial hose systems.
They are known for their "claw-style" head design and are widely used in construction, mining, and other heavy-duty applications.