Ping G440 driver, latest Fujikura shaft Speeder NX Gold Flex: 50X Warranty included Used only once, in excellent condition. This shaft, which just came out in September, is already popular among professionals. It's the successor to the NX Green and is slightly more forgiving, resulting in increased distance. Personally, although it's 50X, it felt similar to the 50S of the Green version. It performed well, but I switched to 60X, so I'm selling this one in good condition.