Taylor Made Rossa Classic Siena 4 putter. New for 2007, the Rossa Classic range of putters feature AGSI+ technology with 14 grooves positioned closer together, which creates smoother rolls for more accurate putts. The grooves are CNC-milled and polymer-filled for a softer, more solid feel at impact. For the more technical among you, when contact is made with the ball, these polymer grooves give way to expose the groove edges, minimizing the backspin and so preventing the ball from skidding.
Specific features for the Classic Siena 4 include : Heel-Toe weighting to help increase accuracy on miss-hits, 304 stainless steel construction and Midnight Black finish for cosmetic appeal.