A Buff Yellow 5" (square edge) is a polishing buff used to bring a high shine to jewelry and other metal objects.
This type of buff is typically used with polishing compounds or rouge to achieve a mirror-like finish on metals such as gold, silver, and brass.
One unique use for this type of buff is in the restoration of vintage or antique jewelry, where a high shine is desired to bring the piece back to its former glory.
A must-have jewelry making item to use alongside a Buff Yellow 5" is a polishing compound or rouge, which is applied to the buff to achieve the desired shine.