SIZE: 6ss=1.90-2.10mm/0.07in.
SIZE: 16ss=3.80-4.00mm/0.15-0.16in.
SIZE: 20ss=4.60-4.80mm/0.18-0.19in.
SIZE: 30ss=6.32-6.50 mm / 0.26-0.26 inches
SIZE:40ss=8.41-8.67mm/0.33-0.34in.
SIZE:48ss=10.91-11.30mm/ 7/16" (inch)
