Nockturnal-G Lighted Nocks Arrows 165 Inside Diameter Including Various Victory, Easton G-Uni Brands, 3-Packs FITS ARROWS WITH INSIDE DIAMETER .165 - Including Victory-VAP Armor Piercing, Easton A/C/C and G-UNI HIGH VISIBILITY and LONG LASTING LITHIUM BATTERIES - Shoot it at dusk, and with 20+ hours of battery life, you can still find your arrow the next day RELIABLE - Piston driven contact switch ensures L.E.D. illumination every time. Waterproof and shock resistant design is second to none NO ASSEMBLY REQUIRED - Nocks can go straight form the package to the shaft in fully operational condition. No prep work needed. Just insert it, and you are ready to shoot THREE PACK PINK NOCKS - Also Available in Blue, Green and Red