Thickness (mm)* I II III IV V VI VII VIII 5.27 6.02 6.90 7.87 5.17 5.82 6.60 7.50 5.02 5.05 5.12 5.13 2.76 2.74 2.77 2.78 Width at Mark 3 (mm) Mark III (5mm thickness) Initial Final 19.14 19.68 Mark VII (2.5mm thickness) Initial Final 19.15 20.20