Note: List price is for one ring only. If you want to buy couple rings, please order two rings for a set. Due to manual measurement, there might be 0.5-2mm differences, hope you can understand. Item Details: Weight: 10.6g/pair Surface Width: 6 mm High-quality stainless steel,resistant to acid,alkali resistant. Stainless steel material: no fading, no rust, no allergies.