Thickness (mm)* I II III IV V VI VII VIII 5.68 6.42 7.28 8.39 5.49 6.38 7.26 8.51 5.04 5.10 5.08 4.92 2.17 2.18 2.13 2.57 Width at Mark 3 (mm) Mark III (5mm thickness) Initial Final 19.19 19.77 Mark VII (2.5mm thickness) Initial Final 19.30 20.43