Bigger and harder-hitting than the original controller driving iron (original set world record from grass, 339 yards). Sports controller ii driving iron set 17 21 degree cintroller ii driving iron set 17 21 degree. Used by over 30 professionals on the asian tour, including lnogest hitter! Controller II Driving Iron Set 17 And 21 Degree. Controller II Driving Iron Set 17 And 21 Degree.