CHROMOLOY3 The  JPX921 Hot Metal irons pair Mizuno’s fastest ever ball speeds with a piercingly straight, ball flight and controllable landing angles. The 3rd generation of Mizuno irons to utilize the resilience of Chromoly – the JPX921 has the most complex face geometry to date for additional energy from the clubface. Choose the more Pro version for a more compact profile with reduced offset. HIGHLIGHT: The JPX921 Hot Metal is Mizuno’s 3rd generation to use Chromoly – R&D generally accept that any new technology needs 3 generations to near peak performance. Faster and faster Chromoly 4140M: Our 3rd generation of designing and manufacturing irons using Chromoly – now taken to its limits. A re-engineered CORTECH face, is now 0.2mm thinner across the centre point. Seamless Cup Face: A new variable thickness sole design allows the leading edge to act as a hinge, resulting in greater face flex and ball speeds. Harmonic Impact: Predicting vibration patters dictated 3 additional sound ribs – producing a more solid sensation. Additional Hot Metal ‘Pro’ Version: More compact option with reduced offset. Pearl Brush Finish: Anti-glare to minimise distractions over the ball. Stability Frame: Extreme perimeter weighting with toe bias for stability from off centre strikes. Mizuno JPX921 Wedges Club # Loft ° Lie Angle Offset (inch) Length (inch) GW 49 63 0.134 35.25 SW 54 63 0.138 35.25 LW 59 63 0.063 35.25 Mizuno JPX921 irons Club # Loft ° Lie Angle Offset (inch) Length (inch) 4 19 60 0.224 38.5 5 22 60.5 0.213 38 6 25 61 0.201 37.5 7 29 61.5 0.189 37 8 34 62 0.173 36.5 9 39 62.5 0.154 36 PW 44 63 0.15 35.5