Boasting the highest moment of inertia (MOI) of any Ping putter to date, the Ping Doc17 is a milled aluminum putter features a semicircle shape. The over-sized putter’s body measures 17.02 centimeters (6.7 inches) and is fully machined from high-grade aluminum, creating precision lines and weight placement that expands perimeter weighting to new levels. Visually, the Ping Doc17 putter represents another major departure for a Ping putter. Technically, it follows our design strategy of continually pushing the limits of perimeter weighting and center of gravity location. Its shape really opens some doors for us from a performance standpoint. The semicircle shape of the Doc17 positions the majority of weight on the extreme perimeter and far away from the center of gravity to create an extremely high moment of inertia. The sole design keeps weight low and is contoured to provide a balance and feel that makes stroking putts of all lengths easier. In addition to pushing the technology curve, the new design measures right up to the proposed USGA limit on putter body length of seven inches. The Ping Doc17 putter’s electroless nickel-plated, finish creates a rich appearance and adds durability to the aluminum head. A light green Winn® AVS grip is standard on the face-balanced putter.