Mizuno JPX 900 Hot Metal Iron Set

Chomoly 4140M – is introduced in the JPX900 Hot Metal, which combines offensive ball speeds with the adjustability of a forged iron.
The secret to this groundbreaking new material is its versatility, which not only paves the way to Mizuno's thinnest ever cup face for phenomenal distance, but also remains soft and bendable in the hosel for precise lie angle adjustments.
The wedges also have their own material – a softer X30 steel that offers all the feel and precision around the greens that even distance-seeking golfers demand.