1. Material: stainless steel 2. Brushed surface treatment, strengthen the corrosion resistance, beautiful and exquisite 3. Thickened stainless steel material, wear-resistant and not easy to lose color 4. The lock buckle fits without jamming, smooth use 5. Easy to install, snap design, convenient for daily use 6. Size: - Small: about 45 x 45mm - Large: about 62 x 55mm 7. Weight: - Small: about 80g - Large: about 170g