no ma'am... a sock full of sand spreads out the impact over too large an area to break a large bone... good for causing non lethal contusions, or, if applied to the side of the head, can knock a person out... it would crush a nose, knock out teeth or split an eye, but you'd have a hard time fracturing the cranium... you might cause a hemotoma inside the cranium, but we wouldn't want that... the subject would lose conciousness too quickly...