#The new Odyssey Ai-ONE Square 2 Square Putters feature a center shaft directly on the plane with the putter's center of gravity. Unlike traditional putters, even face-balanced models, this perfectly balanced design eliminates detrimental torque, remaining square to the putter's arc, or path, throughout the stroke. By removing wanted face rotation from the equation, players will see markedly improved accuracy and consistency on the greens without changing their current mechanics. As with the standard Ai-ONE line, the Square 2 Square leverages Callaway's industry-leading artificial intelligence and supercomputing capabilities to create the most advanced insert in golf. This groundbreaking multi-material construction consists of contours on the back of the face that dramatically increase the sweet spot, delivering consistent ball speeds across the face. With mishits traveling virtually the same distance as center-face strikes, all golfers, including tour professionals, will find the bottom of the cup more regularly. Additionally, Odyssey's research shows that the Ai-ONE insert can leave poorly struck long putts up to 21% closer to the hole, resulting in fewer three-putts. A modern classic, the 7's angular, winged back shape is stable and easy to align. Odyssey Ai-ONE Square 2 Square #7 Putter Features: Unique shaft design centered on the CG plane creates a toe-up, reverse torque position (opposite of a traditional putter with toe hang) that promotes a square face throughout the stroke A.I. designed contours on the aluminum backer of the Ai-ONE Insert promote forgiveness for consistent ball speed across the face Classic White Hot feel that Tour players and amateurs love 3.3� of built-in forward shaft lean presets the hands in a tour-preferred forward position without opening the face Lightweight steel Stroke Lab 90 shaft with counterbalance weight in the butt end shaft for a more consistent, repeatable putting stroke Finish: Navy Blue PVD Stock Grip: Odyssey Oversize