New baffler rail technology a smoother progressive rail design that provides forgiveness from any liebaffler dual rail system withprogressive rail designprogressive rail design provides shallower or steeper rails depending on club loft angle of attack for improved turf interaction and consistency from every lie2 discrete cg positionsfront backtwo different cg settings in the front and back result in two very different ball flights to help you tune your optimum distance and trajectory un