The Head WC REBELS E-SL + FF 11 GW are less demanding and easier to turn than its older brother, the e-SL Pro, so it offers enthusiasts all-day performance with less leg fatigue. The new shape of the tip makes turning a breeze, while EMC technology reduces vibrations which results in a smooth rid.. The design includes a wood core and titanal, complemented by ABS sidewalls and a HEAD Race Plate Evo plate.