Fit Flight Gear Normal Spinning Dart Shafts - Long #7 (38.5mm) OrangeThread is approximately 40% stronger Top where flights lock on are approximately 30% stronger Overall strength is enhanced by using polycarbonate resin It's now easier to tell between locked and spinning Spinning shafts have a rounded top and Locked shafts have a flat top. Also, the top of the locked shaft is now in a matte finish Only work with Fit Flights Total Shaft Length (Not including threads) 2 5 64" 53. 00mm Shaft Only Length 38. 5mm Shaft