Cr-39 1.499 finished single vision plastic resin lenses 1) refractive index: 1.499 2) abbe value: 58 3) specific gravity: 1.32 4) raw materials are imported: ppg and at 5) up-to-date surface curvature design 6) diameters: 50mm, 55mm, 60mm, 65mm, 70mm 7) power range: For 50mm, 55mm and 60mm: A) s: plano ~ +8.00/c: -0.25 ~ -2.00 B) rx power: cyl: -2.25 up to -4.00, -4.25 up to -6.00 For 65mm and 70mm: A) s: plano ~ -6.00/c: -0.25 ~ -2.00 B) s: +0.25 ~ +6.00/c: -0.25 ~ -2.00 C) rx power: cyl: -2.25 up to -4.00, -4.25 up to -6.00 8) available for uncoated(uc), hard-coated(hc), hard coating-tintable (hct) and hard-multi coating (hmc)(ar-coating) and emi processing. 9) semi-finished lenses: Base: 2.00, 4.00, 6.00, 8.00. Envelope/box/carton.