- Material: HSS with hardness 62-64HRC
- Weight of part: 0.028kg
- Control dimensions: Distance of opposite side 14.99(+0.00/-0.0) and external diameter Φ14.000(+0.000/-0.005）
- Machining process: fine grinding, wire-cutting with Seibu Machine from Japan. Fine polising of surfec with roughness Ra0.1
- Measuring method: Micrometer Caliper from Mitoyo, Japan and 2D Measuring Machine.