The QuikFit system is quick and affordable solution to custom clubfitting. The purpose is for fitting only (and not play) as a way to interchange heads with different shafts in order to find the right combination a customer might need. Select drivers and 6-irons are especially bored to accept the QuikFit adapter. Each Quikfit head comes with one adapter (extra adapters sold separately). Note the QuikFit adapters will not fit any other brand of clubs on the market.