Slem Ball sand filled size:5lb/10lb/...../50lb,5lb per increment 3kg-30kg,9" diameter (3kg-9kg) and 10" diameter (10kg-20kg) Slam Ballsand filledsize:(1) 5lb/10lb/...../50lb,5lb per increment(2) 3kg-20kg,2kg per increment,9" diameter (3kg-9kg) and 10" diameter (10kg-20kg) gym slam ball
