Nockturnal Lighted Nocks for Arrows with .246 / .244/204 Inside Diameter Description Made of lightweight durable plastic, the Lighted Nock's provide maximum light transmission that can be seen for hundreds of yards. The lights are built to fit most carbon impact arrows, aluminum arrows, and slim-built arrows with half-outs or hidden inserts, and will only turn on by the command of the archer. Features: FITS ARROWS WITH INSIDE DIAMETER .204 - Including Gold Tip Kinetic, Easton Axis/FMJ, Trophy Ridge, Carbon Impact HOT, and Easton ACC with X-UNI Bushing 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 from the package to the shaft in fully operational condition. No prep work needed. Just insert it, and you are ready to shoot BANG FOR YOUR BUCK - Three lighted nocks per pack so you dont have to worry if you lose one Product Details: Brand: Nockturnal Color: Green Style: X Nock Sport: HUNTING Item Weight: 0.01 Ounces Material: Plastic Magnification Minimum: 1 x Mounting Type: Dovetail Mount Night vision: No Brand: Nockturnal Color: Green Style: X Nock Sport: HUNTING Item Weight: 0.01 Ounces Material: Plastic Magnification Minimum: 1 x Mounting Type: Dovetail Mount Night vision: No Item Package Dimensions L x W x H: 5.59 x 4.17 x 0.35 inches Package Weight: 0.01 Kilograms Item Dimensions LxWxH: 2.25 x 0.25 x 0.25 inches Brand Name: Nockturnal Warranty Description: MANUFACTURE WARRANTY Model Name: 1007049 Suggested Users: unisex-adult Number of Items: 1 Manufacturer: Feradyne Outdoors Llc Part Number: NT-505 Model Year: 2016 Included Components: see descritption Size: .204" Date First Available: September 21, 2012