20-inch Arrow length; 4-inch offset vanes; Highest quality carbon fiber; Designed to deliver unparalleled speed and precision; Crafted exclusively for the EXO-Traditional series crossbows; 2 Nock options: Rhino or Illuminated Beacon; The Carbon Rhino Nocks 250 Grain Arrows are made using top-quality carbon with .003" straightness tolerance; The Illuminated Beacon Nocks 263 grain Arrows provide improved accuracy and arrow recovery; Ultra-bright Beacon Nocks feature a heavier front insert that increases front-of-center weight; Excalibur's archery gear is known for its durability, versatility, and changeability