can you tell us the meaning of the number and abbreviation of the mpf
thanks
Daniel
MPF stands for Maltby Playability Factor. The number is an identifier of the playability of the design of an iron based on its mass and dimensional characteristics. Ralph Maltby developed the formula and system and if your interested in understanding all the detail, I would encourage you to get his book “The Complete Book of Golf Club Fitting and Performance, the Principles, Procedures and Playability Factors”. Below is a link to a brief explanation on what MPF is on this website:
https://ralphmaltby.com/what-is-mpf/
Britt Lindsey