Save a BNDL gets the Finder to recognize changes in a file's BNDL
resource without requiring rebuilding the Desktop Database or
rebooting. It only runs under System 7.0 and later.

A file's BNDL resource controls what icon the Finder uses for the file
and what other kinds of files can be dragged & dropped onto it. The
Finder keeps a copy of this information in the Desktop Database, so if
a file's BNDL changes, the copy will be out of date.

One way to update the Finder is to reboot with the cmd & option keys
down, rebuilding the entire Desktop Database. This can be very slow,
especially for large hard drives. In addition, rebuilding the Desktop
Database doesn't always produce the desired results. If there are
multiple copies of a file around - one of their BNDLs will be used,
possibly not the one you want.

Save a BNDL gives you control over the Desktop Database: If you want a
certain copy of an application file to be the one providing the icons
and being the one that is launched when you open (double click) a
document with the app's creator, then simply drag it onto Save A BNDL
and you're set.

(version 1.5)

The 2nd download is the older version 1.4.

Compatibility
Architecture: 68k PPC

Save a BNDL v.1.5, is both 68k and PPC Macintosh native (FAT)