Description
The Callaway Great Big Bertha Irons feature a titanium face and body. Typically reserved for drivers, titanium saves up to 96 grams of discretionary weight, which was repositioned via a new Tungsten Speed Cartridge, and the results were stunning. GBB Irons boast the deepest center of gravity Callaway has ever achieved in an iron, leading to massively increased launch conditions and forgiveness. Titanium’s tremendous lightweight and high strength properties lend themselves perfectly to making the irons a distance monster as well. The Bertha features the thinnest and lightest face in Callaway iron history. The Commercially Pure Grade 4 Titanium body flexes more at impact than traditional steel and works harmoniously with the extremely thin face to transfer more energy to the ball. In essence, Callaway has imbued the Great Big Bertha with driver-like distance characteristics and performance. In keeping with the lightweight properties of the Bertha, Callaway powers the irons with equally light shaft offerings from Nippon in steel and UST in graphite. Callaway Great Big Bertha Irons Feature: Forged Titanium Face & CP4 Titanium Body save weight that’s redistributed for increased launch and forgiveness CP4 Titanium Body flexes more at impact than traditional steel and works with the thinner face to transfer more energy to the ball Tungsten Speed Cartridge with up to 145g of tungsten (133% increase over Rogue ST MAX) provides increased speed, forgiveness, and launch by creating the deepest CG Callaway iron ever A.I. Designed Forged Titanium Face is optimized to increase ball speed and improve spin consistency Patented Urethane Microspheres enhance sound and deliver a softer feel while still allowing the face to flex for more ball speed Stock Steel Shaft: Nippon N.S. Pro 850GH neo Stock Graphite Shaft: UST Helium Nanocore Black Stock Grip: Winn Dri-Tac Lite 2.0 Authorized Callaway Retailer Product Specs Model Loft Lie Length Offset (mm) Swing Weight Hand 4 20° 60.
