This Core Defense product is a.68 caliber round featuring a patented hard shell that houses a perfectly centered steel ball encased in a layer of inert powder. The result is the hardest hitting, most accurate defense round on the market. P2P Core Defense .68 caliber ammo can be used in all less lethal .68 caliber less lethal devices. Upon impact, the inertia of the steel ball breaks the hard Core Defense shell which allows the encased powder to mark the subject. Additionally, the perfectly centered higher mass of the P2P Core Defense’s steel core insures hard hitting and accurate down range performance. P2P Core Defense give the user additional yards of distance to protect themselves.Centered Steel CoreInert PowderWorks in all 68 Caliber Less Lethal Markers10-Count TubeBlue and White Hard ShellGreat for Training or Defense in Areas where Pepper/PAVA Products are Prohibited