What Mizuno Says:
A milestone in forging technology, the Mizuno Pro 243 and Mizuno Pro 245 chromoly steel, a material renowned for its challenging workability. Through Mizuno's proprietary Grain Flow Forged technique, which has been refined over years of forging expertise, the Pro series now successfully forges chromoly steel alongside soft iron. This breakthrough not only enhances the feel but also allows for thinner face profiles, resulting in exceptional distance performance without compromising on sensation.

benefits:

• Revolutionary New Flow Micro-Slot Structure Crafted - To fulfill the demands of elite players, the Mizuno Pro 243 Iron combines exceptional playability and feel with the
  performance of a compact, shallow cavity design. The proprietary Flow Micro-Slot Structure optimizes distance performance, forgiveness, and trajectory consistency across
  the set, ensuring each swing with the #4 to #Pw/Gw irons delivers unparalleled precision.
• Striking elegance - Captivating Performance From its commanding aesthetics to its unwavering solid impact and remarkable distance, the Mizuno Pro 243 Iron continues to
  captivate with every swing.

Set make up:
#5-9 PW (6 Pieces)