Model used by Akiai Iwai and Chirei Iwai
The head is the same model, but the shaft is different.
(Pro Iwai uses a pro-spec shaft.)
YONEX '22 EZONE CB511 FORGED IRON
N.S.PRO MODUS3 TOUR105 STEEL SHAFT
For right hand use
Head material/method: Body/S25C soft iron forging + graphite hybrid
Number (loft/degree): #3 (20) #4 (22)
Lie angle (degree): #3 (59.5) #4 (60.0)
Length(inch): #3(39.0)#4(38.5)
Shaft: N.S.PRO MODUS3 TOUR105 STEEL SHAFT
Made in Japan