Thank you for viewing. This is the genuine ALTA J CB shaft for the PING G410 driver. It's a rare X shaft. However, since it's a genuine X shaft, it's not as stiff as a custom shaft X, and I think it's surprisingly flexible. The specifications are listed in the photos. It might be a good fit for those who find the genuine S shaft a bit too soft. However, the length is 45.75 inches when attached to the head, and with the original balance of D2, it felt heavy to me, so I cut the butt end by 0.5 to 0.75 inches to lighten the balance and make it easier to swing. The length and weight are shown in the photos, so please understand this before purchasing. Please note that the sleeve screw is not included. The grip is recommended to be replaced. Please refrain from price negotiations. *Please read the profile.