Lumenok Lighted Crossbow Nock Excalibur Diablo/Firebolt Flat Bolt Ends 3-Pack Pink. 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 End .3015" ID) Specifications for Lumenok Lighted Crossbow Nock Excalibur Diablo/Firebolt Flat Bolt Ends: Manufacturer: Lumenok Color: Pink Quantity: 3 Pack Additional Features: For use in Excalibur CamX and older Ten Point crossbows. Features of Lumenok Lighted Crossbow Nock Excalibur Diablo/Firebolt 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 Excalibur: Firebolt Quill Diablo (Aluminum "pull blunt" must be removed from these models) Ten Point: ProLite Approved Models Per Manufacture For use in Excalibur CamX and older Ten Point crossbows. Package Contents: Lumenok Lighted Crossbow Nock Excalibur Diablo/Firebolt Flat Bolt Ends Lumenok EXCF3P: Lighted Crossbow Nock Excalibur Diablo/Firebolt Flat Bolt Ends 3-Pack Pink