Thank you for viewing. The following is subjective, but please consider it as a reference. I've used drivers from other major manufacturers, but they didn't go very far. When I assembled and used this one, my average driving distance increased by over 20 yards. I researched online and found that the Grandista Franklin, combined with a SPEEDER NX Green 40R for those with a head speed of 40-45 m/s, or a 50S for those with 40-50 m/s, is the best combination for maximizing distance, and the compatibility is excellent. I bought it based on this information, and it really did fly!! I usually use SR shafts, and sometimes S shafts, but this shaft felt a bit stiffer even in R flex. It felt good whether I swung hard or smoothly, and I used it often. I'm selling it now because I'm changing to a new driver. Product Details ■ Type: Driver ■ Head: Grandista Franklin ■ Shaft: SPEEDER NX GREEN 40 ■ Flex: R ■ Loft: 10.5 ■ Club Number: 1W ■ Length: 45.5 ■ Headcover: Included Fujikura 50th Anniversary Limited Edition SPEEDER NX Green Yellow Updated VTC for even greater ball speed 【Model Number and Specifications】 - Brand: Fujikura - Model: Speeder NX Green Limited Edition - Flex: 40R Thank you. GRAN DISTA Franklin driver with a carbon head, high performance, and headcover included. - Brand: GRAN DISTA - Model: Franklin - Head Material: Carbon - Accessories: Headcover Thank you for viewing.