The Spider GT sets a new standard of putter performance and construction. A modern wing design features sharp angles and extreme perimeter weighting to create optimal forgiveness. The lightweight aluminum top plate reduces excess weight in the center of the head for a lighter feel. Steel side weights provide a heavy, stable frame that aids distance control. Just 18% of the weight is placed in the middle to stabilize deflection on off-center strikes to give you maximum forgiveness. A new, firmer PureRoll 2 Insert is made with TPU urethane and aluminum beams designed to enhance topspin across the entire face.