The Odyssey Metal-X putters feature a multilayer insert made from a under layer of urethane that provides a soft feel and a outer layer of aluminum with small oval shaped depressions that increase friction with the golf ball at impact and produce a smoother roll of the golf ball. A durable black finish give the Metal-X putters a high end look. The Metal-X 2-Ball putter is an oversized mallet with the well known 2-Ball alignment system. This putter is a great choice for golfers who struggle with alignment.