Better version
This snap cap with the long post is working much better than the standard size.  We use for the boat seat straps when the snap gives way after normal wear and tear.  We had replaced it several times with the shorter version.  But due to the thickness of the strap, they just did not hold very long.  This longer style was easier to install, and we believe it should hold longer.  Glad we found it on Amazon and will purchase refills when needed.