APEX 4inch Diamond tools Metal abrasive polishing pad for marble granite

We add metal sintered diamond chips in the resin bond polishing pads by traditional process. Our set includes 4 pcs Metal Bond pads for each # 50, 100, 200, 400. They are designed for rough grinding. The biggest advantage is that it has the sharpness of traditional diamond segments. And it will not leave a big scratch on the stone surface.