Lighted nocks for 7.62mm arrows. LED nocks fit all shafts with a 0.297 inch inside diameter. On/off switch: nocks automatically light up when pushed up; push again to turn off. Waterproof and shock resistant design. High visibility with long lasting battery life. Lithium batteries provide 36+ hours of illumination, ideal for hunting in low light conditions. Clear plastic construction for maximum light transmission. Durable quality with piston driven contact switch ensuring consistent LED illumination. Color: green, silver, transparent. Material: PC. Size: 7.62mm. Package includes: 6 x nocks. Only the listed items included; other products not included. Note: Lighting and display differences may cause slight color variation between image and actual item. Measurement may vary by +/- 1-3 cm.