Yes, Mizuno is launching five new JPX921 irons, but each finds a distinct place thanks to unique alloys, technologies | Golf Equipment: Clubs, Balls, Bags | GolfDigest.com
Unreleased Mizuno Pro 221, 223 and 225 irons: Check out in-hand photos
Mizuno Irons - Mizuno Golf USA
Mizuno Irons - Mizuno Golf USA
Mizuno Pro 221 Blue Iron Set, Limited Edition Blue Golf Iron Set - Mizuno USA
Mizuno Pro 221 Limited Blue Irons - TourSpecGolf Golf Blog