The Nap Thunderglo Green Lighted Nocks 6 Pack offers ultra-bright LED illumination paired with a simple on/off feature for convenience during archery practice or hunting. Built from a durable polycarbonate blend and an aluminum shaft these nocks are designed for long-lasting performance. Featuring universal collars the Thunderglo Lighted Nocks are compatible with most arrow types (g/x/h/s) making them a versatile and reliable addition to any archer's gear.