サイズ:
No. 7 (inner circumference approximately 54mm, inner diameter approximately 17.2mm)No. 8 (inner circumference about 57mm, inner diameter approximately 18.2mm)No. 9 (inner circumference about 59.7mm, inner diameter about 19mm)No. 10 (inner circumference is about 62.4mm, inner diameter is about 19.8mm)No. 11 (inner circumference about 65mm, inner diameter about 20.8mm)No. 12 (inner circumference is about 67.4mm, inner diameter is about 21.5mm)
