No. The ProMakers do not have changeable dies. They are dedicated to only one size or shape. But I cannot stress enough that this is an advantage when it comes to button makers. ProMakers are better quality machines by a mile. Any machine with removable dies is going to have alignment issues and various other problems that make them less suitable for a production environment, especially for square and rectangle buttons. Those corners are tricky. Believe me. If you skimp, you'll regret it.