Double Concave LensesOuter diameter: φ 6.585~ φ 6.595 Thickness: 1.42~1.46mm Core deflection: ≤ 120 "Send InquiryLive chatProduct DetailDouble Concave LensesShare:PREVIOUS:Lacquering LensesNEXT:Double Concave LensesRelated ProductsDouble Convex Aspheric LensesEFL:0.98mm F#:2.1Optical Flat Glass FiltersEFL:3.6mm F#:1.0 (GJ-1B)Ultra-hard Water-proof BBAR CoatingPlastic Optical Barrels