TenPoint Crossbows Replacement Omni-Brite 2.0 Lite Sticks for Crossbow Arrow Nocks- Red (3 Pack) (HEA-310.3) Easy-to-install LED light FITS A VARIETY of TenPoint arrows fitted with the Omni-Brite Lighted Nock System The brighter the arrow the more visible it is; keep your arrows bright with the Replacement Omni-Brite Lite Stick Once the original lights lose their charge, the TenPoint Replacement Omni-Brite Lite Stick can slide right in so you always have MAXIMUM ARROW VISIBILITY while youre hunting; EASY-TO-SEE RED COLOR 8-10 hours BATTERY LIFE; 2-3 years SHELF LIFE PROUDLY MADE IN THE U.S.A.