Lumenok Lighted Crossbow Nock Full Metal Jacket Flat Bolt Ends 3-Pack HD Orange. The Ultra bright LED technology used in this Lumenok bolt end offers unmatched visibility by other brands. Add a new dimension to your next crossbow hunt and take your bolt home with you. (Flat Nock .285" ID) Specifications for Lumenok Lighted Crossbow Nock Full Metal Jacket Flat Bolt Ends: Manufacturer: Lumenok Quantity: 3 Pack Additional Features: For use in Excalibur CamX and Ten Point crossbows Features of Lumenok Lighted Crossbow Nock Full Metal Jacket Flat Bolt Ends: Super Bright The Lumenok is a lighted arrow nock used for shot placement recognition & arrow retrieval Now has an easily replaceable battery Uses RB-425 (Lumenok Part # RBS) Fits Easton: Full Metal Jacket Bolts Cabelas Accomplce bolt Approved Models Per Manufacture For use in Excalibur CamX and Ten Point crossbows (All crossbows that use a flat ended bolt) Package Contents: Lumenok Lighted Crossbow Nock Full Metal Jacket Flat Bolt Ends Lumenok FMJF3: Lighted Crossbow Nock Full Metal Jacket Flat Bolt Ends 3-Pack HD Orange