Installs: Fabric Cover Buttons (not sold on this site).
Disclosures: Dies are industrial equipment and may have some rusting that will not hinder their function. Returns or exchanges cannot be accepted unless a defect affects function.
Sizes are universal so they work with buttons from other sources.
Wire back buttons are easier to remove from the dies. Flat backs may require a small screwdriver, awl, etc to remove.
Dies allow you to more easily press cover buttons together in comparison to the manual assembly tools. However, the appropriate fabric & cover button combination still need to be used. If the fabric & button combination do not stay together using the manual assembly tools (ie. fabric is too thick for button), neither will they stay together using the dies.