These paper joggers are used to help eliminate static in your documents and to align your pages for punching, binding, cutting, mailing or shipping. You can use one of these units to ensure that all of your pages are perfectly aligned before you finish or cut them. Or, you can use a paper jogger to help align bills, mailers and invoices for mailing, folding, inserting or opening. This is very important if you are using a letter opener since you really don't want to slice into the content of your envelopes.