The 05D620ER.2 is a ValuMax® Protected Silver Broadband Mirror 12.7 mm diameter, with a thickness of 3.1 mm, and flatness of λ/10. By taking advantage of advanced polishing techniques and our high volume manufacturing, ValuMax® mirrors are truly cost effective. This family of mirrors boasts six standard metallic and dielectric broadband coatings, covering the UV, visible, and IR; and are available in 25.4 mm (1.0 in.) diameter utilizing Borofloat® 33 substrates. This mirror has a 40-20 surface quality and is coated for 480 – 20,000 nm.