The  Apex 21 Hybrids are suited to help a wide range of players. They feature new Jailbreak A.I. Velocity Blades designed to increase vertical stiffness near the sole of the club, promoting more speed low on the face where players often mishit their hybrids. The blades allow the Face Cup to flex on the crown to create better spin rate consistency, and the bars are spread to enhance torsional stiffness, to provide more forgiveness across the face. Every model and every face in the Apex Hybrids are uniquely designed using advanced A.I. This proven ball speed technology puts an even greater emphasis on centre and off-centre ball speeds. To create high launch and forgiveness. Callaway has implemented a massive amount of tungsten, and the adjustable hosel helps to optimise loft, trajectory and control. Apex Pro Hybrids also incorporate Jailbreak A.I. Velocity Blades and an A.I-designed Flash Face. The Forged 455 steel provides strength and flexibility, while the iron-like design and fixed hosel create a look at address that highly skilled players prefer.