This response will discuss the differences between the Mizuno 921 Hot Metal irons and the 921 Hot Metal Pro irons.
The Hot metal irons have more offset, are larger in face and more forgiving. The Hot metal pros have a smaller face, have more workability and have less offset. The Hot metal pros are still very forgiving but not as much as the normal Hot metal irons. , The Mizuno JPX 921 Hot Metal is a perfect iron for high handicap golfers. This iron falls into the category of game improvement with a very large cavity back as well as additional offset to the face. The hot metal irons are perfect for giving more forgiveness and distance to a higher handicap golfer. The Hot Metal Pro irons are even bigger for more forgiveness. , The size of the sole is the main difference between the Hot Metal and the Hot Metal Pro. The Pro variation uses the same components and is built similarly, but it has a shorter blade length, a topline that is somewhat thinner, less offset, and a sole that is significantly narrower.