BloodSport Witness Bolts 20 in. 4 in. Vane 6 pk.. Built with more front of center for superior flight and penetration even in high speed crossbows. Straightness tolerance of +-.003". Available in 20" and 22" lengths. Bolts weigh 325 gr. without points. Includes brass inserts moon nocks and flat nocks. Factory fletched with 4" vanes. Specifications for BloodSport Witness Bolts: Manufacturer: BloodSport Quantity: 6 Length: 20 in Included Accessories: Standard Archery Application: Hunting Package Contents: BloodSport Witness Bolts BloodSport B8110053: Witness Bolts 20 in. 4 in. Vane 6 pk.