Features: The glowing arrows tail will automatically light during shootings, making it convenient for use at the night or in low light environment. Glowing arrows tail to meet the personality needs of different users. Convenient installation method, no need for additional tool, easy replacement and assembly. Consist of high-strengths component, ensuring that the tail of the arrows is not easily damaged during high-speeds shootings. It can work normally even in humid environment and adapt to various weather conditions. Specifications: Color:Four Elections Dimension:46.38.37.7/1.820.320.3in Component:plastomer Note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Package includes: 3pcs Arrows LED Lighted Nocks