The Never Compromise GM2 Exchange putters offer a wide range of head and shaft combinations to fit different stroke types and putting preferences. The GM2, or Gray Matter 2, Exchange series of putters have CNC milled bodies with an aluminum composite insert for consistently soft feel and improved distance control. The Exchange portion of the name comes from the interchangeable weighting system that allows players to customize weight distribution and total head weight. This putter series features face-balanced mallet putters for players with a straight-back, straight-through putting stroke as well as toe-down blade putters for players that have an arced swing path.