68 Caliber Self Defense Balls 100 Counts 7.1 Grams Hard and Powerful Aluminum Ammo Non-Lethal Solid .68 Cal Paintball Projectiles Fit for Byrna SD, HD and LE (Silver, Aluminum)Made From Top Class Aluminum, 7. 1 Grams Each Round. Extreme Dense For Maximum Impact. Fly Straight With A High Speed, Hit Hard. Shoot Accurate For Self Defense Or Target Practice. Far Better Than Rubber Balls And Plastic Paintballs. These 100 Counts Alien Play Aluminum Ammo Works Great As 68 Caliber Self Defense Balls To Protect Your Family And Yourself. Perfect 68. Caliber Projectiles For Byrna Series Launchers Like SD HD LE And Any Other 68 Cal