Features: Users can quickly adjust the tail of the arrows according to their personally habits to ensure great flight stability. Especially suitable for competitive archers, helping it improve their shootings accuracy during competitions. Light weight design, without adding extra burden, keep the arrows light weight. Users can quickly change or adjust on fields without delaying training time. Suitable for outdoor fields and competition environment, providing convenient user experience. Specifications: Component: Plastic Type: Reverse bows Tail/Compound bows Tail Color: Green/Black/Blue/Yellow/01/Pink/Red Size: about 3.4x2x3cm/1.34x0.79x1.18inch Package Includes: 1pc arrows nocks Corrector note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.