The ad clearly states that the rolls are 25" by 500' but when you recieve them they are only 250 feet. Buying them through Quill but they ship from the company and Quill is not responsible for the mistake in the ad. You will think you are recieveing the 500 foot roll and no one will do anything about it. It becomes a blame game and you are the one who gets stuck. The quality of the product is good though.