We are offering optical metallic coated mirrors (al, ag, au). *mirror is an object with a surface that has good specular reflection. That is, it is smooth enough to form an image. The most familiar type of mirror is the plane mirror, which has a flat surface. Curved mirror are also used, to produce magnified or demagnified images or focus light or simply distort the reflected image. Its sufaces can be coated by aluminum or silver or gold. *specifications: material: n-bk7 ; uv fused silica ;other optical glassdimension tolerance: +0.0, -0.1mmthickness tolerance: 0.1mmsurface quality: 60/40(standard)clear aperture: >85%flatness: /4 per 25mm@633nmparallelism: