The new Callaway Apex 21 Hybrids feature a high-tech design that blends exceptional A.I. ball speed technologies, game improvement features and adjustability in a players shape. The end result is an extremely versatile, high performance package that can help a wide range of players. The high-tech design refers to the all new Jailbreak A.I. Velocity Blades, which connect the sole of the club to the crown.� The blades are engineered to increase vertical stiffness near the sole of the club, creating more speed low on the face where most players hit their hybrids.� Additionally, the blades are spread apart to enhance torsional stiffness, leading to more forgiveness all across the face.� Sitting just behind the blades, you'll find a massive tungsten weight.� Said weight allows Callaway's R&D team to position the center of gravity lower, promoting a high launch and more forgiveness. Thanks to Callaway's Artificial Intelligence Designed Flash Face SS21, every Apex Hybrid's face is uniquely designed for optimal performance.� Flash Face has a proven track record when it comes to maximizing ball speed and distance on both center, and off-center strikes. Callaway outfits the hybrids with UST's Recoil Dart graphite shaft and Golf Pride's Z Grip Soft. Callaway Apex 21 Hybrids Feature: Jailbreak A.I Velocity Blades increase vertical stiffness near the sole, creating more ball speed low on the face.� Blades allow the Face Cup to flex on the crown for better spin rate consistency.� Blades are spread to enhance torsitional stiffness for more forgiveness across the face. A.I. Designed Flash Face SS21 maximizes ball speed on center and off-center strikes Tungsten sole weight lowers the center of gravity to promote a high launch and more forgiveness on off-center shots Adjustable hosel helps you optimize loft, trajectory and control for more versatility Stock Shaft: UST Recoil Dart 70g Graphite Authorized Callaway Retailer Buy Callaway Apex Hybrids