Odyssey Men's Tank 7 Golf Putter, Black Counterbalance stability weighting, uses a counterbalance weight, heavier head (400g) and heavier shaft (150g) New and improved white hot pro insert, new and improved white hot pro insert is highly engineered for more consistent sound, feel and performance across the striking surface Short and long options, short option - 34-Inch and 36-Inch with 400 gram head, heavy shaft and brass counterbalance weight (40 gram) Tour proven head shapes, features a modified No7 head shape, our most popular model on tour Double barrel alignment, frames the golf ball to provide clear alignment at address