I'm a 74 year old mid to high handicap golfer who had never had a hole in one until about two weeks after purchase of a new set of Titleist T400 irons (7-9, PW, and 43, 49 & 55 deg wedges). My original 9 iron typically played no more than 115-120 yds, but the new I tend to be able to play the Titleist T400 9 iron 125-135 yds and occasionally a little farther. The T400 irons are a definite game improver for this senior golfer who started playing late in life. My first hole in one was made with the Titleist T400 9 iron and a Titleist TruFeel golf ball.