Designed for maxim impact .

The new .68 Cal Metal bearing with Rubber coating the latest non-lethal training munitions available today.

The .68 Cal  Ultimate Balls are extremely  effective, 
Best Self Defense Paintball Ammo Alternative
New and improved Metal balls 11 grams, about 17mm or .68

These work great and are intended for practice target shooting and possible home defense against intruders or animal attacks.
They work in all .68 cal. paintball guns, They are reusable, do not deform and long lasting