Callaway Great Big Bertha 23 Driver 460ccA MATERIAL DIFFERENCE IN PERFORMANCEOur most technologically advanced driver utilizes an ultra-lightweight chassis and easy-to-swing design to increase club head speed and overall distance.FeaturesLegendary Great Big Bertha Distance from an Innovative, Lightweight DesignThis easy-to-swing driver is engineered with an ultra-lightweight design for unmatched distance characteristics. It’s nearly 30g lighter than a tour driver, and it’s an ideal option for golfers who want to increase their swing speed.Forged Carbon Sole & Triaxial Carbon Crown Increase MOITo increase MOI, our engineers paired a lightweight Triaxial Carbon Crown with a Forged Carbon Sole. With all this discretionary weight, our engineers moved the CG lower and deeper to enhance forgiveness while the steel sole plate makes it easier to hit a draw.High Ball Speeds from Jailbreak Speed FrameOur Jailbreak Speed Frame is powered by A.I. for enhanced horizontal and torsional stability. All this stability promotes increased ball speed across the face.Lower Spin from an A.I. Designed Flash FaceWe’ve now included spin optimization in our industry-leading A.I. face technology. The new formula increases ball speed while lowering spin to increase total distance.Callaway Great Big Bertha 23 Driver 460cc Product SpecsModelLoftAvailabilityStandard LengthLieCCSwing Weight9°Adjustable (8°-11°)RH / LH45.75"60.0°460D210.5°Adjustable (9.5°-12.5°)RH / LH45.75"60.0°460D212°Adjustable (11°-14°)RH Only45.75"60.0°460D2Note: this is for your reference only and does not denote the content of the product.UST MAMIYA HELIUM NANOCORE IP 50 GRAPHITE - SHAFTManufacturerFlexWeight ClassTorqueKickpointUst MamiyaLight50HighLowUst MamiyaRegular50HighLowUst MamiyaStiff50HighLowSpecificationClubHead VolumeClub LengthHeadcoverWrenchInterchangeable ShaftMSRP460cc45.75"YesYesYes$699.99