The QUANTUM iron series boasts enhanced forgiveness and spin thanks to its 360° undercut structure.
The "QUANTUM" iron series was developed with a focus on common mis-hits in the impact point for average golfers. While continuing the AI-driven design for each model and club number, a new 360° undercut structure has been introduced. The entire circumference of the head has a cross-section resembling the letter J, and by positioning the face's welding points further back from the face, the face flexes more easily over a wider area even when the ball is hit on the lower part of the face or towards the toe, which is a common mis-hit, resulting in a higher launch angle. This increases the probability of getting the ball on the green. In addition, the incorporation of urethane microspheres provides a high-quality sound and feel at impact. The new tri-sole shape makes it less likely to dig into the ground and improves turf interaction, regardless of the impact. Furthermore, AI-driven face design is still being used, further enhancing the control point and greatly improving the trajectory correction effect.
■The entire perimeter has a cross-section resembling the letter J. The biggest improvement in the "QUANTUM" iron series is the 360° undercut structure. The entire perimeter of the head forms a cross-section that is bent like the letter J. In addition, by positioning the welding points of the face further back from the face, the face flexes more firmly over a wider area from the bottom to the toe than conventional face cup structures, increasing the launch angle of the ball and improving ball speed. Even with mis-hits on the bottom of the face, which are common among average golfers, the ball will get airborne and achieve sufficient distance, and the appropriate amount of spin will be provided, increasing the probability of getting the ball on the green.
■Urethane microspheres provide a comfortable feel. The lower part of the back of the face features urethane microspheres that provide a comfortable feel and body weights for proper weight distribution, but what's noteworthy is how they are mounted. The "QUANTUM" iron series employs a 360° undercut structure, and the urethane microspheres are sandwiched in an L-shape between the undercut at the bottom of the face and the weights. This measure minimizes the direct contact area between the weights and the bottom of the face, allowing the flex effect of the undercut to be fully utilized.
■AI design continues to be implemented. The face incorporates Callaway's long-cultivated AI design (model- and club-specific design). The AI designs the clubs by inputting real swing data and ball flight data from many golfers. As the face flexes more easily at impact, the control points created by the AI design are further enhanced, and the ball flight correction effect is now more pronounced than ever before. It optimizes the launch angle and spin rate for each point of impact, achieving a stable ball speed. It helps to send the ball to a narrower landing area further away.
■The sole beveling has been optimized considering the impact point. While recent Callaway irons have received high praise for their sole beveling, the shape has been slightly modified in the new "QUANTUM" iron series. Previously, the leading edge had a comb-like bevel, but in the "QUANTUM," the beveling is thin and consistent in width from toe to heel. This style was adopted to ensure smooth turf interaction even with slight variations in impact point. Meanwhile, the trailing edge remains the same as before, also beveled from toe to heel. Black Friday
