Tibhar Hybrid K3 FXThe HYBRID K3 FX is the softer version of the HYBRID K3 rubber series. This rubber impresses with its optimum ball feedback, which is created by the extended ball contact time and the fascinating sound. This gives you extremely high control and a feeling of security with all your strokes. The HYBRID K3 FX shows its true potential especially in serve and return situations, as well as in opening games against backspin balls. Thanks to its sticky surface