Several Avery round scallop tags are 9 per sheet, 2.5 inches. The different numbers represent different pack sizes, but they share the same template.
You can design these using the 80511 template in Avery Design & Print Online.
You can also use a template built into Microsoft Word or download an Avery 80511 template for Word, Photoshop, Illustrator, InDesign or Pages.
Here's some information on recommended printer settings.
If you want more information about a specific Avery product, search for the product number on avery.com.