Specification of our prism as follow:
*Material: BK7 or UV grade fused silica
*Dimension Tolerances: +/-0.1mm
*Clear Aperture: >80%
*Surface Quality:60/40 Scratch/Dig
*Surface Flatness: lambda/4 at 633nm
*Angle Tolerance: 60 degree+/-3 minutes
*Chamfer: 0.3mm+/-0.1mm m
*Coatings Optional