Mizuno jpx ez forged irons full custom fit options available the new mizuno jpx ez forged irons has arrived with its injected boron mizuno has always been innovators when it comes to forging golf clubs and with their new iron its taken it to the next level forged golf clubs have always been seen as a players club with ultimate feel but less forgiving as traditional cast clubs but mizuno have changed this by using boron infused with steel this process allows mizuno engineers to use a wider p