This is the Shimada Golf K's-FW steel shaft (S flex), embodying the "direction over distance" philosophy advocated by renowned golf analyst Mark Kanai. This is not just a shaft; it's the ultimate solution to revolutionize the concept of a driver and transform it into a "weapon" for score-making. The 105g weight prevents arm-swinging and naturally creates a stable swing plane using the body. The short 43.5-inch length dramatically improves the sweet spot ratio, increasing the probability of hitting the center. As a result, side spin is drastically reduced, freeing you from the fear of OB (out of bounds). Experience the feeling of confidently swinging your driver, just like your favorite 7-iron. The shaft is Shimada Golf K's-FW, with an S flex. The sleeve is for Ping, and the assembled length is 43.5 inches.