For 21 years, PGA pros Jim White and Greg Johannesen have been honing a better way to custom fit clubs. Building on three pillars — the dead weight, the swing weight and the club length — Jim and Greg are able to custom-fit clubs that deliver results. No one else in the industry looks at these three pillars collectively. PXIII is the patented club-fitting innovation that they are now making available to pros worldwide.In 2005, Jim and Greg teamed up with software programmer Rob Harshbarger to bring the science of fitting to a web-based program that is easy and accurate for pros to use. PXIII is the pro’s fitting system. It was developed by PGA professionals who understand the golf game and the golf business.