On the left side, one can observe the Step-3 of Hub Cap. In this step, one could observe the bowling of sheet after Step-2 of Hub Cap. The upper die is moving downwards and one can see the changes in the red sheet after Step-2. On the right hand, top end, one can observe the colored contours describing pressure applied on the sheet. The different colored contours of pressure applied can be described by the scale on the left. Whereas on the right hand, bottom end, one can observe the equivalent strains generated on sheet when a cut plane cuts the sheet. One can easily see the bowling operation taking place in this cut section. The equivalent strains generated can be described by the scale on the left.