Bestcompu&reg; New .335 Golf Shaft Adapter Sleeve For 2015 Callaway Big Bertha Alpha 815 XR XR Pro High quality aftermarket shaft sleeve adapter. The adapter fit .335 tip size shafts only. Ferrule included. * Screw and washer included. It Compatible with Callaway Big Bertha Alpha 815 XR XR Pro WILL NOT WORK ON 2014 MODEL!!!!!!