Thickness: 1.6 mm
 Diameter: 8mm, 10mm, 12mm, 14mm, 16mm, 18mm
 Thickness: 2.0 mm
 Diameter: 8mm, 10mm, 12mm, 14mm, 16mm, 18mm
 Color: Stainless steel 1.5 yuan/each
 Gold 2 yuan/piece