Nockturnal Lighted Nock X-Series Red 3/pack. These lighted inserts utilize a string-activated nock switch that is foolproof in any condition. Unlike other designs this system incorporates a heavy-duty through-the-shaft battery housing giving the product unmatched longevity. The Nockturnal Lighted Insert Nock allows the archer the ability to continue shooting once the lighted nock activates. Lighted nocks are the cutting edge of the archery shooting world. If you want to up your game in the field equip your arrows with a Nockturnal Lighted X-Series Nock. Specifications for Nockturnal Lighted X-Series Nock: Manufacturer: Nockturnal Color: Red Fabric/Material: Plastic Weight: 1.29598 g Diameter: 0.204 in Features of Nockturnal Lighted X-Series Nock: Bowstring activated linear switch Fool proof operation in any condition Long life lithium battery Super bright LEDs Water and weather proof Unsurpassed reliability Available in redgreenblue and pink Fits smaller diameter carbon .204 ID shafts Package Contents: Nockturnal Lighted X-Series Nock The Nockturnal Lighted Nock X-series Red 3/pack is a quality addition to the Nockturnal lineup. For more great deals on Arrow Nocks and Inserts by Nockturnal please browse our Nockturnal Archery Equipment page. Nockturnal NT-502: Lighted Nock X-series Red 3/pack