Feature: Luminous arrow nock automatically illuminates. Multiple colors available. Suitable for arrow shafts with an inner diameter of 6.2mm. Red/green/blue/colorful four colors are available. Various colors are available to meet individual needs. PE material has a long service life, the shell is made of hard plastic, the texture is tough, the LED light has a long service life The light is stable and bright, and the colors are beautiful. The bulb has high brightness and the colors are bright and eye-catching. Widely applicable. Simple installation. clamp the arrow shaft directly. Ready-to-use. Suitable for arrow shafts with an inner diameter of 6.2mm. The battery has a large capacity and a long service life. The light will be very bright in the first three nights, but will gradually become weaker on the fourth night. Do not throw it away after that. You can leave it for a while and use it for a few more hours. Repeat until the power is used up. Automatic lighting is easy to use. Aut arrow tail does not need to be lit in advance. When the string is jammed and fired, when the automatic lighting is turned off, just pull the switch. Specification: Product name: Luminous arrow tail Material: ABS Color (light): red/green/blue/colorful Size: 46.3*8.3*7.7mm Product net weight: 1.6g (single) Product gross weight: 12g Package Content Luminous arrow tail *3PC Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.