Manufactured by S-TRIXX (Mitsubishi Chemical) S-TRIXX X S-TRIXX X 60S Callaway sleeve, for driver. As the reviews say, the final push helps increase distance. A valuable shaft that is no longer in production. I ended up only using it for one round, so I decided to put it up for sale. This is a discontinued product. ---Product Description--- Shaft Name: S-TRIXX X 60s Flex: S Length: 45.25 inches Grip: mcc teams plus 4 Since this is a used item, please check the condition in the photos and only purchase if you understand and accept no returns or refunds. Also, it is listed on other sites. Priority will be given to the first person to purchase. Thank you for your understanding.