Rebuilt Bill Validators: When choosing a replacement bill validator it is sometimes easier to go back with the same one. Look on the side of the bill validator and look at the label. You will need the make and model number when matching it up. Validators also come in different voltages and front masks or the front nose piece of the validator where you insert the bill. There are bill validators that take only dollar bills and others that take 1, 5, 10, 20 dollar bills .Make sure that you order the right bill validator to meet your needs. All of our bill validators are cleaned, disassembled, worn parts replaced, new belts installed and thoroughly tested. Comes with 90 day warranty plus freight.