CNATTAGS Pet ID Tags Fire Hydrant Shape, 2 Sizes, 8 Colors, Personalized Premium Aluminum Small: 1.00 inches x 1.00 inches. 2.54 cm x 2.54 cm. Thickness: .046" (1.17 mm) Large: 1.18 inches x 1.00 inches. 3.00 cm x 3.00 cm. Thickness: .046" (1.17 mm) LIFETIME WARRANTY Exclusively by CNATTAGS Stainless Steel Split Ring Included TO COMPLETE YOUR PURCHASE: Please Click "CUSTOMIZE NOW"