Nockturnal Lighted Nocks is the leading designer and manufacturer of lighted nocks for arrows and crossbow bolts. Nockturnal’s unique, patented, string-activated, linear switch with piston-driven assembly ensures the activation of the LED bulb every time. Nockturnal Lighted Nocks feature super-bright LEDs and long-life lithium batteries for superior illumination that lasts. Available in a wide variety of sizes and configurations that fit nearly any size arrow or shaft, these specialty nocks perform with exceptional accuracy when shot from both vertical and crossbows. Nockturnal Lighted Nocks blaze down range with extreme brilliance with a wide spectrum of color options and are offered as either constant single-color light emission or with dual-color strobing options on select models. Nockturnal continues its excellent reputation for providing the most reliable, long-lasting lighted nocks on the market.