Carbon Express Game Slayer Fletched Aluminum Crossbolt with 4-Inch Vanes, 6-Pack Aerospace 7001-T6 aluminum alloy material for advanced strength and reliability Hand anodized for ultra-smooth finish and increased penetration Converted to 88,000 PSI to achieve bone-crushing power Designed to handle todays high powered crossbows and offer exceptional performance and overall value. Bolts come with standard 4" vanes, 100 grain field point, inserted moon nocks