The Evnroll ER8v4 Tour Mallet Putter - Long Slant features SweetFace Technology.
Features & Benefits:

- Zero Dispersion
A series of closely spaced variable width channels that are wider in the center and get gradually narrower toward the heel and toe create a precisely calibrated v-shape that progressively redirects the ball down the target line.
- Even Roll Distance
Since the channels get narrower away from the center, that spacing gets wider. This increase in contact surface means more energy transfer when a ball is hit away from the sweet spot.