The application of ultra-precision machining technology to Japanese Zirconia Powder present us the unique performance of zirconia sleeves 1. High-precision processing reduces the optical loss sharply(<0.2dB) 2. Unique wear resistance 3. Experienced agglomeration assures unique stability(withdrawl force200~600fg) 4. Accurate multi-stage plane surface solution keeps excellent smooth and bright surface 5. Complete set of test equipments hold whole course quality control **Nonstandard zirconia sleeves may be custom manufactured, both split and solid types of various length and O.D.