Nockturnal’s Lighted GT-Nocks offer outstanding reliability in the worst possible conditions. They provide a vital indication of where your arrow hit the animal, and also aid in locating your arrow if you miss. The GT-Nocks are bowstring activated to keep operation simple and intuitive, and are both water and weather proof. Available in red or green, the GT-Nocks have an extended runtime of 20+ hours and fit smaller diameter carbon .246 ID shafts. 3 nocks per pack. Features: Bowstring activated linear switchFool proof operation in any conditionLong life lithium batterySuper bright LEDsWater and weather proofUnsurpassed reliabilityAvailable in Red or GreenFits smaller diameter carbon .246 ID shaftsEach nock in this package weighs approximately 25 grains3 lighted nocks per pack Nockturnal GT Red Nock 3pk NT-102