- Diameter: 50.8 mm, Tolerance: +/- 0.3 mm
- Dicke, Zentrum: VGF (Vertical Gradient Freeze): 400 µm, Tolerance: +/- 25 µm
- Primary Flat Length: 15.8 mm, Tolerance: +/- 1 mm
- Secondary Flat Length: 8.0 mm, Tolerance: +/- 1 mm
- Surface orientation*: (0001) deg, Tolerance: +/- 0.25 deg
- Bow, Warp: <30 µm, Tolerance: µm
- Total thickness variation: <20 µm, Tolerance: µm
- FWHM (0002, 3mm slit): <50 arcsec, Tolerance: arcsec