The JIAKAI 20 Pcs 38MM Blank Bone Shape Pet ID Double Sided Blank Tag Dog Cat Pet Name Phone Number ID Tag Charm PersonalizedRandom Colors is a perfect way to keep your pet’s identification up to date. These tags are made from hardened aluminum with bright colors and are resistant to rust and corrosion. They also have a scratch and wear resistance that will last for years. The tags come in a pack of 20 and can be personalized with your name, phone number, or address.