Material: Copper
No. 5 (diameter: 15.7mm, circumference: 49.6mm)
No. 6 (diameter: 16.5mm, circumference: 51.8mm)
No. 7 (diameter: 17.3mm, perimeter: 54.4mm)
No. 8 (diameter: 18.1mm, circumference: 56.5mm)
No. 9 (diameter: 18.9mm, circumference: 59.5mm)
No. 10 (diameter: 19.8mm, circumference: 62.1mm)
No. 11 (diameter: 20mm, circumference: 64.6mm)
No. 12 (diameter: 21.4mm, circumference: 67.2mm)
