“The face-balanced mallet of the original OMOI trio, built for members whose putter tracks straight back and through rather than arcing. Heaviest head in the launch group at 383 grams for a stable, pendulum-like feel.”

Mizuno's 2022 M.Craft OMOI 03 turned the rounded 03 mallet into a deliberately heavier, more stable package. Its 383-gram, face-balanced head was forged from 1025 carbon steel, CNC milled and given a deep-milled face, then paired with a lighter shaft and grip so the extra mass stayed concentrated at the head. Stock 8-gram sole weights and included pairs of 3- and 13-gram weights let a fitter move the head 10 grams lighter or heavier than stock. It was the high-stability mallet in the first OMOI trio without abandoning the dense feel and finish quality that distinguished the M.Craft line.

The OMOI 03 is notable for combining a forged-and-milled carbon-steel mallet with a 383-gram face-balanced head and included plus-or-minus 10-gram tuning. The opened sources establish a technically distinct production model, but not scarcity, collector premiums or a model-specific following, so sleeper or cult-classic status would overstate the evidence.

Best for a golfer with a straight-to-slight-arc stroke who likes a substantial head, restrained mallet shape and firm, precise milled feedback. The included weights are valuable when matching green speed or preferred swing feel. Players who release the toe strongly, dislike heavy heads or need a long alignment line should test another neck or shape.

• The OMOI 03 is a rounded full mallet with a double-bend shaft, full-shaft offset and a face-balanced configuration.
• Its standard head weight is 383 grams, heavier than the original M.Craft heads.
• Each head was forged from 1025 carbon steel, CNC milled and finished with a deep-milled face.
• The putter shipped with 8-gram sole weights plus pairs of 3- and 13-gram weights for fitting.
• Mizuno offered Double Nickel, Blue ION and Black ION finishes, with retail availability beginning March 17, 2022.

OMOI arrived in March 2022 as a heavier-stability extension of Mizuno's M.Craft family. At a launch price around $350, it competed with premium milled models while many rivals pursued multi-material, very-high-MOI construction. Mizuno instead emphasized forged 1025 carbon steel, added head mass and interchangeable sole weights.

Callaway Golf Values' July 1, 2026 trade guide assigns $91 to each listed 2022 OMOI 03 finish. That is a trade-in benchmark rather than an expected retail sale price; finish wear, headcover, weight kit and length can materially affect an individual example.