The patent-pending and USGA conforming PIPE® putter was designed with an innovative cylinder pipe on the top of the clubhead to provide a 3-dimesional visual readout of exactly where your putter is lined up. Essential to the PIPE®'s standout performance is its ultra-light thermoplastic centerpiece surrounded by heavier steel, which pushes additional weight to the perimeter of the clubhead. A heavy tungsten plug in the rear of the pipe section accounts for 15% of the putter's weight, producing a very high Moment of Inertia (MOI) to resist twisting on miss-hits and to bring back the Center of Gravity (CG) further back than any putter design has been able to accomplish. The combination of thermoplastic and steel produces a very high moment of inertia and an extremely low center of gravity that can only be accomplished by an expanded mallet that has maximum ground-level weighting. The expanded mallet keeps the clubhead stable throughout the swing, encouraging a pendulum stroke. The putter weighs 346 grams, the ideal weight for players of all levels to sink longer putts. The P-Line face insert is a proprietary advanced polymer composite with a 98 hardness rating that produces the perfect combination of soft feel and stability at impact.