The Odyssey Black Series putters are a multi material construction which combines a 1025 carbon steel body along with a tungsten flange. The tungsten creates a deep and log center of gravity in the putter head which will produce a smooth roll of the golf ball. The black PVD finish reduces glare to aid alignment. A layer of urethane is located between the body and the flange which along with the milled face enhances feel and feedback for the player. The Black Series Tour Design 4 putter is a heel toe weighted small maller with a crank neck. A great option for a golfer with a slight arc putting stroke.