Thank you for viewing! Authentic product Fujikura Shaft Series...Speeder Series Speeder Series / Model Name...SPEEDER NX GREEN 40R 50th Anniversary Limited Edition, Limited Pink Color, MSRP: ¥44,000 Performance is the same as NX Green. Grip: Golf Pride ALIGN Pure-fied (This is a technique to analyze the linearity and symmetry of a golf club shaft and minimize the effects of distortion when attaching the club head. It involves finding the starting point of the shaft winding and bringing the balance to the direction of flight or directly behind it, thereby reducing bending, etc. Most PGA Tour players use this technique, which cost about ¥11,000) According to website research, the SPEEDER NX Green 40R is suitable for people with a head speed of 40-45 m/s, or up to 50S for those with 40-50 m/s. I usually use SR shafts from general manufacturers, and I also mainly use S shafts, but this shaft felt a bit stiffer even in R, and I liked using it because it felt good whether I was hitting hard or swinging smoothly. I am selling it because I am changing shafts for a new driver. For those in the Kanto region who receive the item via Eco-Mercari delivery, the shipping cost will be cheaper, so I will deduct ¥500. Thank you. The VARIABLE TORQUE CORE technology newly adopted in SPEEDER NX has been updated. By tightening the torque on the grip side more than the SPEEDER NX, the head accelerates smoothly from the transition. By creating a difference in torsional rigidity with the middle section, further head speed improvement has been achieved. By suppressing the reverse bending of the shaft during the downswing, it enables a swing with a sense of unity.