Pliable, durable, rubber no-bounce slam ball. Balls are 10" diameter, eleven weights from 10-70 lbs. Durable, textured surface is easy to hold; Specifically designed for high-impact throws and slams. Black. 10" diam. Eleven weights; For more information about choosing the right slam ball for your needs, and sample workouts, read; Get to Know Power Systems' Slam Balls. Features: 11 weight options from 10 to 70 lbs. 10" diameter. No-bounce, no-roll construction. Rugged, textured surface for easy grip. Updated version of our popular MEGA Slam Ball.