A powerful, straight punch thrown with the rear hand. From the guard position, the rear hand is thrown from the chin, crossing the body and traveling towards the target in a straight line. The rear shoulder is thrust forward and finishes just touching the outside of the chin. At the same time, the lead hand is retracted and tucked against the face to protect the inside of the chin. For additional power, the torso and hips are rotated counterclockwise as the cross is thrown. A measure of an ideally extended cross is that the shoulder of the striking arm, the knee of the front leg and the ball of the front foot are on the same vertical plane.Weight is also transferred from the rear foot to the lead foot, resulting in the rear heel turning outwards as it acts as a fulcrum for the transfer of weight. Body rotation and the sudden weight transfer is what gives the cross its power. Like the jab, a halfstep forward may be added. After the cross is thrown, the hand is retracted quickly and the guard position resumed. It can be used to counter punch a jab, aiming for the opponents head (or a counter to a cross aimed at the body) or to set up a hook. The cross is also called a straight or right, especially if it does not cross the opponents outstretched jab.