This is a 5-Pack Single use de-cocking bolts that are designed for use with Barnett Crossbows (Not Hyper Series). The bolts allow you to release the kinetic energy stored in your crossbow without damaging one of your hunting arrows and are perfect for discharging your crossbow in the field. Our de-cocking bolts have glow in the dark fletching for low light cock vane identification They are perfect for unloading your crossbow in the field without damaging one of your hunting arrows. Simply remove your arrow and insert the Evac bolt green fletch down. Ensure you have a clear, unobstructed area of ground to shoot the Evac into. Aim your crossbow at a 45-degree angle to the ground, take the safety off and pull the trigger.