New 4 colors Automatically LED Lighted Arrow Nock Compound Bow Archery Arrows Nock Hunting Shooting Accessories Tail Archery Description: Features: Brand new and high quality Durable and portable, lightweight High-Visibility LED Bowstring activated on-off switch Lighted nock No Assembly Required Fit for any inter diameter 7.6mm shaft Half moon shape nocks Can be lighted about 48 hours. Work for: Aluminum arrow shafts & carbon arrow shafts & glassfiber arrow shafts After the battery is weak. Please do not throw away, After a period of time, It can be a few hours again work, Until power is completely off. Note: This is not a toy, DO NOT AT PEOPLE Specification: Material: PC Color: Red/ Yellow/ Blue/ Green Size: 11.5 x 7.5cm Weight: 25g Package Included: 3 x Led Lighted Arrow Nock 1 x Screwdriver Note: please allow 1-5cm errors to the actual dimension due to manual measurement Thank you Real color may slightly different from pictures due to computer screen's resolution, brightness, contrast etc. If you have any question, please contact us before leave negative feedback, we will try our best to serve you, thank you for your understanding Specifications: Brand new and high quality Durable and portable, lightweight High-Visibility LED Bowstring activated on-off switch Lighted nock No Assembly Required Fit for any inter diameter 7.6mm shaft Half moon shape nocks Can be lighted about 48 hours. Work for: Aluminum arrow shafts & carbon arrow shafts & glassfiber arrow shafts