The C522 Irons come stock with the super-light Fubuki HL graphite shaft by Mitsubishi Chemical that range from 50 to 60 grams depending on the flex.

 

The extremely light FUBUKI shafts come with lower kick points and lower cycles per minute frequencies that promise to help players achieve maximum velocity and to fight a fade; producing a longer, straighter and a slightly drawn ball flight.

 

It is also available in a KBS MAX 80 steel shaft

The KBS MAX 80 is a lightweight low-kick point steel shaft that produces a high trajectory for longer distance shots.