The TaylorMade Rossa Core Classics Putters is a line of putter that feature classic, tour proven head-shapes with AGSI+ technology. AGSI+ stands for "Anti-skid Grove System Insert", which is a putter face insert that incorporates 12 uniquely shaped CNC-milled grooves to promote forward spin and reduce skid and bounce for superior distance-control and accuracy. These grooves are filled with a soft polymer to absorb unwanted impact vibration to give a satisfying feel at impact. Weight saved from the TitalliumTM insert is redistributed to the perimeter of the putterhead increasing the moment of intertia (MOI) for exceptional forgiveness on mis-hits. The head is made from 304 stainless steel and has a Tuscan nickel finish for a sleek, beautiful look. There are four time-honored shapes available, all of which incorporate traditional lines and sole widths. Those models are the Daytona, Suzuka, Lambeau and Fontana.