optical fused silica rod lens

We supply optical rod lens,specification of our rod lens as follow:
Dimension Range: 3-50mm
Polish on both sides,cylindrical side or all side
Diameter tolerance:+0/-0.02mm
Thickness tolerance:+/- 0.02mm
Centration:<3 mins
Surface quality: 40/20
Surface accuracy: 0.5-0.2
Clear aperture: >90%
Chamfer: 0.1-0.25mm*45 degrees
Coat:as requested
Material:Float glass,K9 ,FS,SapphireSF11,CaF2,MgF2 or other optical glass
optical fused silica rod lens