Check the listing for details. Killer Instinct Lethal 405 Crossbow Package, 10 Carbon Bolts. Condition: Used. Listed at 300.00 USD. Killer Instinct Lethal 405 Crossbow Package, Package Includes:Killer Instinct Lethal 405 FPS CrossbowKiller Instinct Crossbows Slayer Crossbow Case10 Carbon Bolts Hard Hitting: Fast shooting 405 feet per second powerQuiet Performance: Custom rubber shock absorbers reduce noise and vibration for increased stealth and performanceLightweight Performance: Ultra-light composite stock is comfortable and easy-to-maneuverX-Lock Foregrip: Adjustable on full length picatinny rail offers custom comfort with multiple holding options High cost-effective, designed for beginners and youth hunters, these crossbow arrows bring you speed, kinetic energy and accuracy. 8.8mm(0.346") diameter carbon crossbow bolts total weight: About 420 grains (22 inch) include 100 grain point.