Donald's Masters arsenal includes MP-H4

Luke Donald holds up his ball after making par on the second hole during the second round of the Masters.

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— Mizuno USA officials have high expectations for their new MP-H4 irons, which were boosted even more when Luke Donald practiced with the 3-iron and immediately put it into his bag.

Donald, the former world No. 1, is carrying the MP-H4 3-iron at the Masters. According to Chuck Couch, director of golf club marketing for Mizuno USA, the MP-H4 long irons are generating considerable interest among touring pros.

The 2-iron through 7-iron of this forged set are hollow, with the two-piece head (forged carbon steel and stainless steel) joined together by plasma welding. Hollow construction allows Mizuno to maneuver the weight for increased stability and a higher trajectory. Meanwhile, the short irons and wedges are solid metal.

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