The Nockturnal Launchpad Crossbow Nocks feature an integrated one-piece aluminum housing that protects the battery and LED during high-speed flight and impact ensuring long-lasting performance. The adjustable barrel end provides a custom fit for nearly all crossbolt brands and models with a second grey collet included for added compatibility. A reusable c-clip prevents accidental activation during storage while the indexed nock end offers a safe and simple ON/OFF design. Each nock weighs approximately 30 grains and the pack includes three nocks.