Thickness (mm)* I II III IV V VI VII VIII 5.65 6.37 7.25 8.32 5.40 6.19 6.99 8.06 4.92 4.97 5.03 5.06 2.47 2.48 2.48 2.56 Width at Mark 3 (mm) Mark III (5mm thickness) Initial Final 19.13 19.23 Mark VII (2.5mm thickness) Initial Final 18.82 20.64