The fuel hose at the fuel rail of the Ford GT is a press-fit reinforced rubber hose. Some GT's - now 14-15 years old, are experiencing some weeping from the press-fit connections. This long-tail all stainless steel (band and screw) clamp set is intended to be added over the press fit ends of the fuel inlet hose for added security against leaking.
Regular, serrated hose clamps should be avoided as they may do more harm than good by compromising the integrity of the hose. By contrast, these hose clamps have an extended "tail" that insures smooth band contact with the hose.