The Tannerite Exploding Targets Pro Pack - 20 Count is the original binary reactive rifle target kit. With a compatible centerfire rifle this kit will continue to enhance and bring an exciting effect to target practice. Once you've made a direct aim and have fired at the rifle target the high-velocity of the bullet will then cause a large explosion and a cloud of water vapor. With each Tannerite product instructions are included and should be read carefully before use to avoid bodily injury.