Crafted in carbon composite, the Tao (meaning a traditional Mori spear) is designed and meticulously made to be featherlight, tough and durable. An aerodynamic tapered waisted design reduces air disturbance and carves a truer flight path. Its premium spring ring grips the flight tighter to the shaft, meaning less chance of Robin Hoods. And a greater chance of victory.Measurement: Does not include thread.