300 mm / 12" Size 1
350mm / 14" Size 3
380 mm/15” Size 4
400 mm / 16" Size 5
430 mm / 17" Size 6
450 mm / 18" Size 7
475 mm / 19" Size 8
500 mm / 20" Size 10
525 mm / 21" Size 11
550 mm / 22" Size 12
600 mm / 24" Size 81
650 mm / 26" Size 82
700 mm / 28" Size 83