THE TECH EXPLAINED
Callaway Big Bertha OS Cobra King OS Ping GMax
A new thinner and stronger steel face creates a larger sweet zone with a sole lip to help ball speed on low-face hits. King OS irons are hollow right through the set, a construction that allows them to move weight lower and further back for head stability on off-centre strikes. Tungsten weighting in the toe has moved the club’s CG lower and more central, aiding launch and performance out of the toe.
COR-Eye technology encourages the whole face to flex. The design targets speed and launch, as well as dispersion. A new wider sole allows a GC position that aids forgiveness and launch. Its new shape remodels the trailing edge to improve turf interaction. Wide sole allows a new, deeper Custom Tuning Port location to aid impact vibration and also moves CG further back for twist resistance. Derek Murray is an award-winning independent club fitter and a leading expert in golf club technology. He’s based at ForeGolf at Killeen Castle, Ireland.
Callaway’s internal ‘standing wave’ lowers weight and aids launch; it’s now tungsten-loaded to enhance its effect. Exo-Cage construction allows Callaway to strip out unnecessary weight and create a light, stiff chassis that helps the new face cup to work optimally. A new 360 º cup face means face edges are thinner for better retention of energy across the face, improving ball speeds across a wider area.