Track your bolts in flight and make them easier to find after sunset or in low-light conditions with these lighted nocks. Batteries are easily replaced, and the nock stays lit for hours. The carbon crescent (1/2 moon) nock weighs 28 grams but adds only 18 grams to the bolt’s overall weight. For use with carbon shafts. Moon nock fits .297'' inside shaft diameter. Per 3. Available: Red, Green (not shown).