Description This 266 pcs trial lens set is very useful for optometrist, vision testers or household use. It contains 266 pcs of lenses, including 160 spherical lenses, 80 cylindrical lenses, 12 prisms, and 14 accessories. Product Features ?266 pcs glass trial lenses ?Metal rim: 36mm inner diameter, 38mm outer diameter ?Lens tray: Plastic tray with labels of silver background ?Outer case: Portable aluminum case with combination lock ?A fixed PD lens frame (random PD value) Specific Lens Sphere lens in pairs (+/-) (160 pcs)--diopters as follows: 0.12, 0.25, 0.50, 0.75, 1.00, 1.25, 1.50, 1.75, 2.00, 2.25, 2.50, 2.75, 3.00, 3.25, 3.50, 3.75, 4.00, 4.25, 4.50. 4.75, 5.00, 5.25, 5.50, 5.75, 6.00, 6.50, 7.00, 7.50, 8.00, 8.50, 9.00, 9.50, 10.00, 11.00, 12.00, 13.00, 14.00, 16.00, 18.00, 20.00. Cylinder lens in pairs (+/-) (80 pcs)--diopters as follows: 0.12, 0.25, 0.50, 0.75, 1.00, 1.25, 1.50, 1.75, 2.00, 2.25, 2.50, 2.75, 3.00, 3.25, 3.50, 3.75, 4.00, 4.50, 5.00, 6.00. Prism lenses(12 pcs): Pairs: 0.50, 1.00, 2.00, Singles: 3.00, 4.00, 5.00, 6.00, 7.00, 8.00. Auxiliary lenses (14 pcs): PL(2), CL(2), FL(2), MR, PH, SS, RF, GF, BL, Cross cylinder (0.25,0.50). Packing List Aluminum Case X 1 Lens X 266 pcs Trial frame X 1 Instruction X 1 Lens cloth X 1 Package Dimensions 22.05" x 16.14" x 3.94"; 13.56 Pounds