Forged irons - clubs created from a single piece ... "The forging process is taking a solid billet of steel, and then through various steps, using heat, pressure, and tooling dyes to refine ...

As with the Mizuno Pro 241 and 243 irons released in 2024, the chassis of the JPX 925 4-iron through 7-iron is forged from a single billet of 4120 Chromoly, an exceptionally hard alloy.