I machine apply my roll labels. Do all your roll label have cardboard cores?

NO!. Final finishing could be coreless or cardboard cores. If nothing is specified, core type will be determined by our factory. So if you machine apply your labels and you need a specific sized core diameter, ie: 1" or 3" , and in addition your machine applicator requires cardboard cores, this information must be conveyed to 4OVER4.COM at time of ordering. You can always specify it in the "Got Comments" section (found on file upload screen - see visual below), and one of our 4OVER4.COM reps will make a note to your order and advise if there is any additional cost.