The TFi 2135 mallet line will now include three new models (Cero, Elevado and Mezzo), each with the distinctive alignment mark that’s lined up at 21.35 millimeters above the ground, or the exact center of the ball at address. At that height, Cleveland engineers believe the alignment mark provides a better sense of the face’s aim, regardless of whether your eyes are inside, outside or directly above the ball at address. Their research suggests players who rely on an alignment mark equal with the bottom flange will be mis-aligned 80 percent of the time.