Designed to explode when hit at speeds of at least 2,000 fps, the Tannerite 1/2 lb. Binary Targets 20-Pack are compatible with centerfire rifles. These targets come with 20 catalyst packs and a mixing container to combine the compounds. The clear jar comes with a blaze orange label to aim at. 3.5"H x 3.25"W x 3.25"L.