I hope this is what you are looking to use.If you are creative and want to save a few bucks you can make a template. Take a new roll of plate material, or the end of the roll and draw an outline of the tab onto a heavy piece of heavy card material. Cut it out with scissors and use it as a template to trace the outline onto a cut roll. You can then cut the tab out of the plate material with scissors. It will work just as well.