Brass camlock couplings are a type of quick-connect fitting that are commonly used in a variety of industries, including agriculture, construction, and manufacturing. They are made of brass and are used to connect and disconnect hoses, pipes, and other fluid-handling equipment quickly and easily.

The "style" of a brass camlock coupling refers to the specific shape and configuration of the fitting. They are available in a variety of sizes and styles, including A-style, B-style, C-style, D-style, and E-style, each with their own unique features and applications.

    Brass type A camlock coupling have a male adapter and a female coupler.
    Brass type B camlock coupling have a female adapter and a male coupler.
    Brass type C camlock coupling have a female adapter and a female coupler.
    Brass type D camlock coupling have a male adapter and a male coupler.
    E-style camlock fittings have a female adapter and a male dust cap.

Each style is available in a variety of sizes, typically ranging from 1/2 inch to 6 inches in diameter, to accommodate different hose and pipe sizes.