Stiff Flex. The ST-X 220 Fairway from Mizuno inspires confidence with a high, draw bias flight for moderate swing speeds. Mizuno''s X-Axis design features deep internal weighting to produce a high draw bias. The 3 wood brings driver-like ball speeds from the SAT2041 Beta Titanium face, made with multi-thickness CORTECH used in the drivers for the highest, most stable ball speeds ever in a Mizuno fairway. The 5 and 7 wood use the Maraging MAS1C steel face, significantly more compact than the 3 wood for optimal use in the fairway.