Overall Size: 32x6.2mm / 1.26x0.244 inch(LxD); Packing List: 60 Pack x Archery Arrow Nocks Advantage: Arrow nocks contribute to a smooth and consistent release from the bowstring. They minimize friction between the arrow and the string during the shot, allowing for optimal energy transfer and minimizing any interference with arrow flight. Instruction: Insert style arrow nock that eliminates the need for glue. Apply gentle pressure and carefully slide the arrow nock onto the arrow shaft. Application: Archery arrow nocks play a crucial role in securely connecting the arrow to the bowstring and aiding in arrow flight. NOTE: Ensure that you have selected arrow nocks that match the diameter of your arrow shafts. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store