BIZ4U Pure Titanium Ti Matte Key Chain Key Ring Split Rings (16PCS/Lot) Size:10mm,Weight: 0.183g/pcs Inner Diameter: 8mm Outter Diameter: 10mm Thickness: 2mm Size:12mm,Weight: 0.243g/pcs Inner Diameter: 10mm Outter Diameter: 12mm Thickness: 2mm Size:14mm,Weight: 0.285g/pcs Inner Diameter: 12mm Outter Diameter: 14mm Thickness: 2mm Size:25mm,Weight:1.9g/pcs Inner Diameter:20.3mm Outter Diameter:25mm Thickness:2.9mm Size:32mm,Weight:3g/pcs Inner Diameter:26mm Outter Diameter:32mm Thickness: 3mm