Excalibur Crossbow Diablo Crossbow Bolt w/Illuminated Nocks 18 in 3 pk. Spined for blistering speed they have a heavier front insert to increase front of center weight for unparalleled accuracy. Features a flatback insert which gives you more consistent contact with the string. Includes front and rear inserts. Length: 18" Weight: 250 gr. (without point). Factory fletched with 2" vanes. Specifications for Excalibur Crossbow Diablo Crossbow Bolt: Manufacturer: Excalibur Crossbow Length: 18 in Overall Length: 18 in Condition: New Archery Application: Hunting Package Contents: Excalibur Crossbow Diablo Crossbow Bolt Excalibur Crossbow 22DV18IL-3: Diablo Crossbow Bolt w/Illuminated Nocks 18 in 3 pk