The TenPoint Alpha-Blaze HPX Lighted Nock for HP Bushing is designed for enhanced visibility and accuracy. This lighted nock contains a one-piece nock/LED unit that press fits into the arrow’s HP Aluminum Bushing. Upon firing, the bowstring activates the LED light, providing bright illumination for easy tracking. The nock features a retention groove that ensures secure engagement with the string, making it ideal for high-performance crossbows. TenPoint Crossbows TenPoint Alpha-Blaze HPX Lighted Nock for HP Bushing HEA-380.3R