Thickness (mm)* I II III IV V VI VII VIII 5.45 6.65 7.85 9.19 5.32 6.36 7.57 8.74 4.77 4.79 4.83 4.90 0.00 0.00 0.00 0.00 Width at Mark 3 (mm) Mark III (5mm thickness) Initial Final 19.06 19.66 Mark VII (2.5mm thickness) Initial Final 18.95 20.38