Thickness (mm)* I II III IV V VI VII VIII 5.82 6.35 7.14 8.35 5.57 6.35 7.26 8.36 5.01 5.01 5.00 6.03 2.63 2.73 2.82 3.04 Width at Mark 3 (mm) Mark III (5mm thickness) Initial Final 19.15 19.74 Mark VII (2.5mm thickness) Initial Final 19.08 20.24