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Golfballs.com Expert Description

Gain distance on the course with driver level COR in Mizuno’s JPX-900 Hot Metal Steel Iron Set. This collection of clubs utilizes Chromoly 4140M which is 15% stronger than 17-4 pH stainless steel. What’s great about using Chromoly 44140M in the construction of these irons is that you can customize your loft and lie without losing COR. It also maintains ball speed across more of the face.

Superior Frame Design

The face’s cup face and CORETECH multi-thickness design allows the ball to increase speed off the face while also increasing the sweet spot and COR area. Extra attention was put into the frame's design too. To increase MOI, more weight was able to be placed around the perimeter from the lighter materials used. The frame’s Power Frame Geometry allows the club to make a powerful sound at impact for improved responsiveness from its Harmonic Impact Technology.

Features of the Mizuno JPX-900 Hot Metal Steel Iron Set:

• COR is not lost when customizing the club’s loft and lie
• The sweet spot & COR are increased across more of the face area from CORETECH multi-thickness in the Cup Face design
• A solid sound is produced at impact from the Power Frame Geometry design with Harmonic Impact Technology
• To make the club 15% stronger, Chromoly 4140M is used instead of 17-4 pH stainless steel