FEATURES:-Lighted crossbow bolt end offers the crossbow user the ability to see shot placement like never before-The Ultra bright LED technology used in this Lumenok bolt end offers unmatched visibilty by other brands-Replaceable battery-ECC Lumenok Fits-Green LightPRODUCT SPECIFICATIONS:Dimension 0.70 X 2.80 X 5.25Height 0.7000Width 2.8000Length 5.2500COLOR GREENTYPE NOCKSMECHANICAL NFIXED NGRAIN 29DIAMETER .297" IDOTHER FEATURES: SIMPLE PREPERATION OF ARROW SHAFT PRIOR TO INSTALLATION WILL INSURE TROUBLE FREE OPERATION.AIDS IN TUNING,STAYS LIT UP TO 40 HOURS FITS:EASTON POWERBOLT,BEMAN THUNDER BOLT & TENPOINT PRO- ELITE