TaylorMade Rossa Spider Putters Steel wire-frame and strong aluminum core create a super-high MOI for consistent distance on off-center hits. MWT with two movable weight provides customizable feel. Steel wire frame moves more weight to the perimeter boosting MOI for more consistent distance on off-center hits. AGSI+ technology promotes forward spin and negates backspin for a smoother roll to make more putts. MWT with two movable weights permits the golfer to customize the head weight to the optimum position.