Perfectly Aligned, TW GS comes with an non-rotable hosel technology which keeps the shaft spine perfectly aligned through all different loft/lie settings.  

Flip Slot, With the new flip slot technology the club face recieves maximal face flexure to reduce spin, gain speed and give additional forgiveness.

Radial Face, Designed with radial face structure to dynamically flex all parts of the clubface and maximaze speed regardless of where on the face the ball is struck.

Keel Design and Weight, Built with a raised keel towards the heel to promote a draw biased ballpath and gain in MOI.