Hunter XT shafts are one of the most popular shafts in the Gold Tip line. Provides the archer with a balance of performance, accuracy, and value. Includes GT series nocks and Accu-Lite inserts. Per 12. Straightness factor: .003. Wt. tolerance: 2 gr. Recommended field point size: 5/16 or 20/64. Size Spine GPI Dia. Length 500 .500 7.3 .291 30 400 .400 8.2 .295 32 340 .340 8.9 .300< Type: Arrow Shafts.