6 Inch Bauer Style CouplingsBauer Style Couplings Bauer couplings are specialty ball and socket connections, designed primarily for use in irrigation, dewatering and other agricultural applications. This style of fitting is widely available in lightweight, durable galvanized steel in sizes ranging from 4 to 8. Cam and groove couplings and bolted flanges require perfect alignment for connection. By contrast, Bauer fittings can be coupled at offsets of up to 30 degrees depending