Zirconia drops glass drops Zirconia Drops, Glass Drops Specifications Characteristics Chemical Compositions Physical Features Diameter Ranges ... 8-4.0 G-J-III Wearproof TypeZirconia Glass Drops Big specific density,highintensity,low wear, used for ... -4.0 RAME Zirconia Drops (Made in lsrael) Lowering wear and tear between drops and contact part of machine ... 4 Series of home-made,imported grinding drops