1.High reflection 2.custom design 3.Competitive price 4.fast lead time Specifications: MatericalBK7 ,k9,sapphire,Ge,Si,Caf2 Mgf,Znse GaAs,ZnsAngle tolerance5''-3'Surface quality85/50,60/40,40/20Angle accuracy<10 arc secDimension tolerance+/-0.01mmflatness1/4@633nmClear aperture>90%Bevel0.1mm-0.5mmcoatingGold coating, AR, HR, PR coating, etc. Metallic Coated Mirror