For plumbing applications where unrestricted flow through a given pipe size is a priority, and hose size is adaptable.While a standard 1" x 1" pipe to hose adapter only has a 3/4" internal diameter in the 1" barb section; a Full Flow 1" x 1" pipe to hose adapter has the full 1" internal diameter all the way through. As a result, however, it requires that the next larger hose size be used - which may or may not be appropriate in every application. FFC fittings are Full Flow Curved, and have a sweep 90 design to provide a no-restriction flow capacity Fittings are cast bronze A generous hex nut is cast-in to allow for secure tightening Sufficient hose seating area is provided for double-clamping