Iron-type utility designed to match the Z521 irons

The back face has a flat design that evokes a simple muscle back (similar to the Z521).

It also inherits the high trajectory, optimal spin and maneuverability that are characteristic of low-center-of-gravity irons.

In addition, the unique bounce design not only provides a sense of security when addressing the ball, but also prevents the head from opening up, which often occurs when you mishit the ball.

The lineup consists of three types: U2, U3, and U4. The soft iron body allows for adjustment of the angle.

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