Cobra king f7 driver black blue in less than a year cobra has managed to make a tremendous leap forward in the development of the f7 series these advancements include aesthetically pleasing and performance inspiring features such as the improved sound of the f7 in comparison to the f6 its predecessor a sophisticated 3 weight system replaces the flipzone and carbontrac movable weight technologies found in the previous models these ldquosmartrdquo models are enabled with cobra conn