Chucking is an illegal bowling action which occurs when a bowler straightens the bowling arm when delivering the ball. The Laws of Cricket specify that a bowler's arm must not extend during the bowling action. Only the rotation of the shoulder can be used to impart velocity to the ball. Throws are not allowed. If the umpire deems that the ball has been thrown, he will call a no-ball which means the batsman cannot be given out for that delivery. Current regulations of the International Cricket Council (ICC) set the legal limit of 15 degrees of permissible straightening of the elbow joint for all bowlers in international cricket.