Semi-Finished 70MM - 72MM, Single Vision Specifications: Semi- Finished 70MM - 72MM Single Vision Lenses, Range: 0.50 (Sola only), 2.00, 4.00, 6.00, 8.00, 10.00 Base Curves; Semi-Finished 75MM - 76MM, Single Vision Specifications: Semi- Finished 75MM - 76MM Single Vision Lenses, Range: 0.50 (Sola Only) , 2.00, 4.00, 6.00, 8.00, 10.00 Base Curves; Semi-Finished Lenses , 70MM - 72MM, ST-28 Specifications: Semi- Finished 70MM - 72MM ST-28 Bifocal Lenses Range: 0.50, 2.00, 4.00, 6.00, 8.00, 10.00 Base Curves; Semi-Finished Lenses, 75MM - 76MM ST-28 Bifocal Lenses Range: 0.50, 2.00, 4.00, 6.00, 8.00, 10.00 Base Curves / or comparable; Semi-Finished Lenses, 75MM - 76MM, Bifocal, ST-35, Base Curve Ranges: 2.00, 4.00, 6.00, 8.00, 10.00 / or comparable...