The Mizuno JPX-850 are built to increase distance for plyaers in the mid-to high-handicap range. But these irons are not all about distance, Mizuno worked to create a distance iron in a more reasonalbly sized head and to retain feel and workability. The key for the JPX-850 irons is the Power Frame construction that increases the rebound area of the face for a greater "spring" at impact. This results in faster ball speeds and more distance, consistently, across a larger portion of the face compared to traditional irons. This design also moves weight to the extreme corners of the club head for added forgiveness. The sole is designed to cut through any lie for solid ball striking anywhere on the course, in all conditions.
