Mega-Pearlblast Special polishing glass-beads, not cause silicosis, very good shine for removing calculus and plaster from acrylic. Art. No. Unit 25-605 5 kg Can / 50 mµ 25-625 25 kg Bag / 50 mµ 25-705 5 kg Can / 125 mµ 25-725 25 kg Bag / 125 mµ