3. Advantaged: Foam-back is soft, easy to polish curve part.
It can be used to polish marble, granite, ceramics, glass.
They are foam backed for polishing on the surface of marble,
granite, ceramics, glass and hard composites. Flat pads are for
polishing plane and the profile pads are allowed for easy polishing
the profile shapes or the areas that are hard to polishing by
machines. They are good at edging or seaming polishing.
