Callaway Big Bertha Fusion Irons

Details

Callaway Big Bertha Fusion Irons

2-PW (9 irons)

Fitted with NS Pro Nippon 990 Uniflex Steel Shafts (Between Reg & Stiff)

Except 7i which has been re-shafted with Callaway Golf RCH System 75i Firm Flex Graphite Shaft – This is likely that Callaway do not do the Uniflex shaft anymore so it was re-shafted in the closest spec shaft in production.

Lamkin Crossline Midsize Grips

This club has been graded ‘Average’ in our condition guide meaning it shows the normal signs of fair wear & tear of a club of its age. Please see our condition guide for more information.

Note: The 5 iron is missing the small Big Bertha Weight insert.

For details of this product from Callaway at time of launch please see below:

Callaway Big Bertha Fusion.

Callaway’s top-of-the-range model.

This latest generation of Callaway irons incorporate superior weight-shifting Fusion Technology and three distinct materials.

Tunite is an alloy comprising nickel and tungsten and allows for 77% of the clubhead mass to be positioned around the perimeter of the iron, creating extreme perimeter weighting through an ultra-high Moment of Inertia (or MOI) which is the measure of a club’s resistance to twisting. More resistance to twisting gives exceptional stability and straighter shots.

The face is a lightweight, formed 6-4 titanium face insert.

This grade of titanium is one of the strongest titanium alloys; the “6” refers to the percentage of aluminum (6%) and the “4” refers to the percentage of vanadium (4%) in the alloy.

Using this material in the face of Callaway Big Bertha Fusion irons creates a clubface that is 35% lighter than a comparable steel face.

That frees even more mass to be distributed around the perimeter creating even more stability at impact.