Description: Fits any bolt with inside diameter 6.2mm Turn on and off easily Same plastic color as the light Weighs only 20 grains Battery life: up to 20 hours Color:RED Package : 12pcs light nocks The luminous light makes it easier to see Lightweight and precision-balanced for superior accuracy Waterproof and shock resistant design,plastic nocks and stainless pisiton Shot placement recognition and arrow retrieval. Indexed nock end provides added safety. Adjustable barrel end is easy to install and provides reliable performance fit. Press the metal parts,it will turn on when the circuit connected.If you want to turn it off,pull the metal parts for circuit disconnection. If you pull off the metal part,don't worry,it is not broken,just put it in. Please don't remove the wire in the plastic part,it is a part of the circuit,it will not work if the circuit is not complete. It is mechanical,please turn it on before you shoot.And it can't turn off automatically.

• Waterproof and Shock Resistant Design
• Plastic Nocks and Stainless Pisiton
• Fits any bolt with inside diameter 6.2mm
• Turn on and off easily
• Battery Life up to 20 Hours

Waterproof and Shock Resistant Designhotianq