The Excalibur Beacon Nock with Aluminum Rhino Inserts, model 10729, is designed to provide an illuminated path to the target, enhancing arrow recovery. These ultra-bright red light nocks are activated on the shot and feature an easy-off deactivation switch for convenience. Compatible with all Excalibur crossbows and carbon arrows with a .300” inside diameter, the Beacon Nock ensures visibility and accuracy. The included Aluminum Rhino Inserts maximize durability, making these nocks a reliable choice for any archer. Excalibur Beacon Nock w/Aluminum Rhino Inserts 3pk 10729