abrasive/abrasive paper/flap disc good effct polishing.grind wgeek canapplied for grit line finisheson brass plates cind satin can be applied for grit line finisheson brass plates cind satin finishes on soft metals.density or hardness,adjust by changing the pcs of pads in each Flap wheel,and can also increase the hardness by chemical treatment.non-woven abrasive brush roll/buff/grinding wheel/ ...
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