Mizuno JPX 923 Hot Metal Iron Set Hand:Right white grooves on the bottom

white grooves on the bottom of the face help you keep the face square at address

squarer club face through impact

perfect for cleaning club grooves and removing dirt

A 14g back weight can be positioned in the front for lower spin and maximum workability

Multi-material construction with tungsten positioned low in the 4-7 irons creates a higher launch with a lower sweet spot

Mizuno JPX 923 Hot Metal Iron Set Hand:Right white grooves on the bottomMizuno JPX 923 Hot Metal Iron Set Introducing Nickel Chromoly A new material with so much additional ball speed, our engineers switched their focus to feel and stopping power. At 35% stronger than our original Hot Metal material, 4335 Nickel Chromoly enables a high energy 8% thinner clubface. Combined with Mizuno's vibration controlling V Chassis and deep CG design, the JPX923 Hot Metal irons are as enjoyable and controllable as they are long.