Super bright for superior flight visibility, the lighted Tenpoint CenterPunch HPX 20" Carbon Crossbow Bolt Alpha-Blaze Nock is equipped with TenPoint's Alpha-Blaze HPX Lighted Nock with easy activation and deactivation. Upon firing the crossbow, the bow string pushes the nock fully into the bushing and activates the LED Light. To deactivate, grip the nock and pull straight out with your fingers or Bednar Perfect Puller (sold separately) until the LED Light turns off. LED Light lasts approximately 24-hours when activated.Measuring 20-inches in length, weighing 445-grains, & featuring 15.5% FOC, the CenterPunch HPX is spine-aligned to the odd color vane & is TenPoint's most accurate 20a ^2 arrow.Each arrow is inspected for straightness to within .001" and each package is weight-grain matched within 1-grain per arrow. Featuring a unidirectional carbon inner layer for stiffness, and a woven carbon fiber outer layer for impact strength, the arrow is equipped wi...