Designed to punch and penetrate with incredible power, the PileDriver crossbow bolt features heavy carbon for maximum kinetic energy and knock-down force. Breakthrough construction ensures spine consistency for enhanced accuracy, while the composite material is incredibly durable at impact for years of reliable performance. Includes inserted half-moon nocks and six loose flat nocks.100-grain field points not included. Per 6. Length: 20. Straightness factor: .004. Wt.: 442 gr. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Carbon Bolts.