Excalibur ProFlight Illuminated Crossbow Bolts 1201318 Black/White. 001? straightness and +/- 1 grain weight tolerances the ProFlight Arrows will ensure repeatable accuracy which is everything for confidence and success. Specifications for Excalibur ProFlight Illuminated Crossbow Bolts 1201318: Manufacturer: Excalibur Crossbow Color: White Black Features of Excalibur ProFlight Illuminated Crossbow Bolts: High quality carbon fiber .001" straightness 1 grain weight tolerance Package Contents: Excalibur ProFlight Illuminated Crossbow Bolts Excalibur 22EXP18IL-3: ProFlight Illuminated Crossbow Bolts 1201318 Black/White