SIZE:5ss=1.70-1.80mm/0.06 inches
SIZE: 7ss=2.10-2.20mm/0.08 inches
SIZE: 9ss = 2.50-2.60 mm / 0.10 in.
SIZE: 12ss=3.00-3.20mm/0.12 in.
SIZE:16ss=3.80-4.00mm/0.15-0.16in.
SIZE: 20ss=4.60-4.80 mm/0.18-0.19 in.
SIZE: 30ss=6.32-6.50 mm / 0.26-0.26 in.
