M1 driver original shaft. TM1-116 shaft developed in collaboration with MITSUBISHI, with adjustment function. I was using it in a SIM2 MAX, but I am selling it because I am replacing my driver. When the ball flight was not stable left and right with the standard TENSEI TM50S, I replaced it from the M1 driver and it became stable. Consider this if: - Your ball flight is not stable with the SIM2 MAX original shaft. - You bought an aftermarket shaft for your SIM2 MAX, but it's not working well. - You want to change the shaft on your SIM2 MAX or other TaylorMade clubs and see the difference, but aftermarket products are expensive and hard to buy. Please check the 8th image (marking extracted from the TaylorMade official website) for the shaft specifications. - Model: TM1-116 - Flex: S - Adjustment function: With TaylorMade sleeve Thank you for viewing.