Umarex P2P Core Defense Pepperballs .68 Caliber 100 PackThis is the most exciting less lethal projectile pepper ball in the market and this is the big 100 count jar! The Core Defense P2P features a Steel Core Ball centered by six internal fins and surrounded by 7% PAVA Chemical Irritant. It will work in all . 68 Caliber Less Lethal Launchers. The internal steel ball is designed to give this less lethal round more weight which means this will fly straighter, farther, and break consistently on the target