Slide-On Pet ID Tag | Collar Tag | 3 Sizes & 9 Colors to Choose From Anodized Aluminum Collar Tag by Providence Engraving. 9 Vibrant Anodized Colors to Choose from and 3 Sizes. Custom Laser Engraving is Included with your Purchase. Choose Your Color and Size Options via the Drop Down Menus Select "Customize Now" to add up to 4 lines of Laser Engraved Text Up to 20 Characters of Custom Text per Line are Available Detailed Tag and Slot Dimensions are Available in the Product Images. These tags are compatible with most belt buckle style closures but please confirm the slot dimensions before ordering.