NIGHTMARE XTREME Crossbow Bolts Carbon Half Moon Nocks 12Pcs 20"The Nightmare Xtreme, 100% pure carbon bolt, is designed for one thing, Hunt and Hunt Hard! We have spent years testing to create a bolt with maximum penetration, supreme accuracy, and unmatched toughness. This bolt features a balance of speed and penetration. It is the perfect crossbow bolt for all hunting situations. Constructed of 100% Carbon which gives the Nightmare Xtreme unmatched quality and straightness shot after shot. Straightness