Allen ARROW NOCK SHOOTING STAR LIGHTED GREEN - NEW IN PACKAGE ;THIS NOCK FITS MOST CARBON ARROWS AND THE BATTERIES WILL LAST FOR UP TO 8 HOURS OF CONTINUOUS USE, MAKING IT A GREAT CHOICE FOR THE SERIOUS ARCHERY HUNTER. FITS MOST CARBON ARROWS WITH 9/32" OUTSIDE DIAMETER. WEIGHT: 26 GRAINS.--ARROW NOCK SHOOTING STAR LIGHTED GREEN