I am assuming the shaft is the True Temper Dynalite 85, which was listed as the stock steel shaft for these irons. I do not have the butt diameter measurement for this shaft and Cobra's Customer Service did not have the information either. An educated guess tell me it would be a .600" butt diameter and use the S60 steel extension. Some of these light weight steel shaft have a larger butt diameter for structural strength and if that is the case then the Universal Extension (GW1047) would be the extension you would need. Either way, .600" butt diameter or larger, you can use the Universal Extension.
Date published: 2016-08-25