Check the listing for details. 12Pcs LED Lighted Nocks 7.62mm Inside Diameter For Compound Bow Arrow Nocks. Color: White, Condition: New. Listed at 25.99 USD. Product Description： 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 High visibility - maximum light transmission,easy to find your arrow even at night or dawn Long Battery Life--48+ hours of battery life,long lasting but light weight Lighted Nocks for Crossbow with 0.297"-0.303"(7.62mm) Inside Diameter-6 Pack 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. Specification： -Fit bolt size: 0.300 inch(7.62mm) -Battery Life: 48+ hours - Shock resistanta -Available Colors: Yellow Package Included: 12Pcs Lighted Nocks Note： Please leave Positive Feedback and 5 Star Ratings for us if you are satisfied with our products and service, and we will do the same for you ! Your satisfaction is our highest priority. Please contact us if you have any questions or requests about our products or service. We are always glad to assist you and stand by our products.