1)Dielectric Mirror:
Specifications:
Material: BK7 grade A optical glass
Dimension Tolerance: +/-0.2mm
Clear Aperture: >85%
Parallelism: <1 arc minute
Surface Quality: 40-20 S/D
Flatness: Lambda/4 per 25mm
Coating: R > 98% on S1, R=(RS+RP)/2
Bevel: 0.25mmx45deg

2)Protective Aluminium Mirror
Specifications:
Material: BK7 grade A optical glass
Dimension Tolerance: +/-0.2mm
Clear Aperture: >85% of diameter
Parallelism: < 1 arc minutes
Surface Quality: 60-40 S/D
Flatness: Lambda/4
Coating: R> 90% on S1
Bevel: 0.25mmx45deg

3)UV enhanced Aluminium Mirror
Specifications:
Material: BK7 grade A optical glass
Dimension Tolerance: +/-0.2mm
Clear Aperture: >85% of diameter
Parallelism: < 1 arc minutes
Surface Quality: 60-40 S/D
Flatness: Lambda/4
Coating: R> 90% on S1
Bevel: 0.25mmx45deg

4)Protective Silver and Protective Gold Mirror
Specifications:
Material: BK7 grade A optical glass
Dimension Tolerance: +/-0.2mm
Clear Aperture: >85% of diameter
Parallelism: <1 arc minutes
Surface Quality: 60-40 S/D
Flatness: Lambda/4
Coating: R> 90% on S1
Bevel: 0.25mmx45deg