100% SAFE - completely inert, dummy rounds used for training and instructional activities DISTINGUISHABLE - metal case with bright orange ABS plastic insert makes the round highly visible EXCELLENT TRAINING AID - classroom training, loading/reloading drills, gun handling drills, malfunction drills and diagnosing shooting problems DURABLE - no chance of rim breakage with nickel casing, unlike plastic alternatives FIRING PIN SAFE - recessed primer hole prevents damage to your firing pin