Safe-T Collar Vet Bands 500 Ct. ID Veterinary Bands for Animals Product measures 20" by 3/4" and can fit most animals. Collars can be written on with Sharpie markers for easy identification. Strong adhesive closure with safety perforation for safe and easy removal Sold as 2 rolls of 250 collars with easy to use box dispenser. Waterproof - Made in the USA - TIP: For animals requiring larger vet collars, adhere two collars together.