(b) 8 Pieces of 6" / 150mm Diamond Polishing Pad for granite marble concrete (a) 1 Piece of B13 (13mm /. And 1 Piece of 6" Velcro Backer/Pad Holder (5/8"-11 Thread arbor). -ideal speed of grinder/polisher: 3500-4500 RPM. ).
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