Bold, symmetrical, sleek, powerful … and straight Material: Face: 6-4 Titanium Body: 100% Titanium Finish: Royal Blue Features: Bold, symmetrical, sleek and powerful. Inspired by the enormous, but graceful manta ray, the clubhead takes on a “square-like” shape. Why? All in an effort to move more weight further from the center of gravity (or out toward the outermost perimeter of the head) creating a slightly high moment of inertia over a traditional shaped driver. The easy to align aerodynamic profile is constructed from a 6-4 titanium face and a thin, lightweight titanium crown, skirt and soleplate. Choice of shafts For more details about the Acer Mantara XL Square Head Driver, click here.