Installs: Fabric Cover Buttons (not sold on this site).
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.
Disclosures: Dies are industrial equipment and may have scratches, rust, oil or other cosmetic imperfections that will not hinder their function. Returns or exchanges cannot be accepted unless a defect affects function.