Constructed using the highest quality carbon fiber with .001” straightness and +/- 1 grain weight tolerances, ProFlight Arrows will ensure repeatable accuracy which is everything for confidence and success. Equipped with ultra-bright flat-back Beacon Nocks 3-Pack Available in 3 lengths: 16.5″, 18″, 20″ 250 Grain Arrow weight .001″ straightness tolerance +/-1 grain weight tolerance 2″ Blazer vane with a 3 degree offset White cresting allows for easy shot placement verification LUMENOK (3 PACK): PRO FLIGHT 20” – PRODUCT CODE: 22EXP20IL-3 PRO FLIGHT 18” – PRODUCT CODE: 22EXP18IL-3 PRO FLIGHT 16.5” – PRODUCT CODE: 22EXP16IL-3