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Players cited with this
Brooks KoepkaPRESS“As a Srixon rep, he games the company's most aggressive ZX4 blades from a 4 iron through to a pitching wedge.”
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Players who use this also use
Srixon ZX7 irons
also used by 1 of them

Srixon ZX7 MK II
also used by 1 of them

TaylorMade SIM Max
also used by 1 of them
Titleist CB 714
also used by 1 of them

Mizuno JPX 900 Tour irons
also used by 1 of them
Mizuno JPX 919 Hot Metal Pro
also used by 1 of them
Photo credits
- Brooks Koepka — Idz93, CC BY-SA 4.0