Rare spec VENTUS BLUE VELOCORE 7X shaft for Callaway driver with Callaway sleeve. How about this for those who find the flex S insufficient? Even though it's an X flex, it doesn't feel overly stiff. It's a mid-kick shaft, so it's easy to time and swing through without any quirks. If you find the black version too demanding, it's worth trying the blue. Thank you for your consideration. Weight: 133.7g Grip: Tour Velvet Rubber 360 #Callaway #Callaway #Fujikura #Ventus #Driver #Velocore