Caldwell's Game Series AR500 Steel Targets come in 4 different popular game silhouettes for competition, practice, and recreational use. Constructed using 3/8"" AR500, the finest rifle rated target steel available on the market, capable of withstanding thousands of rounds. 1/2"" x 1"" center slot is compatible with the Caldwell AR500 Target Post. These targets are rated up to 3,000 fps impact velocity, 3,500 ft-lb impact energy and are covered by a lifetime guarantee."