Engineered to maximize terminal ballistics as defined by FBI test protocol, Defender ammunition provides maximum stopping power for the ultimate in personal defense. Our innovative bonding process welds the jacket to lead core for improved penetration, 1.5x expansion, and the proven performance you rely on when the stakes are high.20 Rounds per boxHollow PointExpands up to 1.5x the original diameter resulting in maximum stopping powerNotched JacketPreprogrammed to expand into six uniform segments for consistent tactical performanceProprietary Bonding ProcessWelds jacket to lead resulting in improved penetration and retained weight