TenPoints Magnum XX75 Aluminum Bolts boast aerodynamic metal shafts, CPC carbon inserts and omni-nocks. 100-gr. field points included. Factor Fletched with 4 vanes. Per 6. Length:20. Straightness factor:+-.003. Wt. tolerance: +-2 gr. Nocks:Omni. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Aluminum Bolts.