The Tannerite Single 1/2 Pound Reactive Target is specifically designed to be safe and non-flammable during storage mixing and handling producing a dramatic water vapor explosion and thunderous boom when shot with a rifle.Tannerite Single 1/2 Pound Reactive TargetSafe and non-flammable until shotProduces water vapor and explosive sound effectDesigned specifically for rifle shootingSingle target package for convenient useThe preferred choice of hunters law enforcement and U.S. armed services for shot indication and target practice providing instant feedback and excitement for shooting sports.