Tannerite makes the safest and most stable binary reactive targets on the market. To achieve this level of quality, all targets are made in the USA with the finest materials available. Tannerite was specifically designed to be safe and non-flammable, whether it’s sitting on a shelf, being mixed or used. When shot with a high-power rifle, it produces a water vapor and a thunderous boom. Tannerite is the shot indicator target of choice for hunters, law enforcement, and US armed services. This is a 4-pack of 1/4 bricks.