Read comparative reviews here Material: Body: 431 Stainless Steel Finish: Black Breadth: # 3 – 90mm Features: There are three important technological features that make these higher performance clubs. First, we incorporated our variable face thickness to reduce the perimeter area of the impact area so the entire club face could be more active Secondly, the crowns were constructed with exclusive VCT (variable crown technology) and measure as little as 0.5mm thick. Lastly, the wide profile increases the Moment of Inertia. All these features provide for a high launching ball flight with incredible accuracy. Versatility is another word to describe the Acer XK fairway woods. Multiple lofts are offered including those not commonly found from a strong 3-wood for players who have no problem getting the ball airborne to a high-lofted 9-wood. One addition is a 4-wood for those players wanting just one fairway wood in their bag. Comes with high quality Apollo Shadow Ultralight graphite shaft. For more information about the Acer XK, click here.