The Nippon Zelos 7 Steel Shaft's light weight and strength have been mutually exclusive. Reducing the weight of steel has lowered its strength, increased the likelihood of breakage and reduced the pliability required to make dynamic shots. Two years ago, however, we committed ourselves to solving this dilemma by developing a new type of steel. Even though stronger steel commonly decreases flexibility, and greater flexibility commonly decreases strength, we set our minds on developing a steel material that would deliver both greater strength and greater flexibility. After a long, arduous struggle of trial and error, we finally developed a new material that offers impressive light weight, strength and tenacity. Features: Developed from a new steel material, providing an impressive Light and pliable steel shift. Designed for slower speed golfers that prefer steel shaft playability Combination of super-light frame and softer shaft profile make this shaft super easy to swing Available in .355" taper tip - #3 iron (38.5") to Wedge (35")