Excel Abrasives supplies Diamond Designer Burr Sets. Excel Abrasives manufactures industrial diamond products. Diamond Designer Burr Sets are the diamond coated bits are the perfect accessory to the engraver or any dermal tool. Diamond Designer Burr Sets can be used to engrave glass marble or granite. These diamond designer burr sets are also popular for dressing the holes on a glass or semiprecious bead. It is used in industries like stone, construction, gem, semi-precious stones, glass, die mould, electronics and general engineering for grinding, dressing, cutting, drilling, lapping and polishing of wide varieties of materials.