This Trial Lens Set has a total of 232 pieces. Optional of Leather or Aluminum
carrying case. Standard removable tray with velvet interior. Plastic or metal rings
available as well as one color or two color rings. Lenses included are the
following: ± Sph 0.12, from 0.25 to 4.00 in steps of 0.25, from 4.50 to 7.00 in
steps of 0.50, from 8.00 to 15.00 in steps of 1.00 and from 16.00 to 20.00 in
steps of 2.00. ± Cylinders 0.12, from 0.25 to 4.00 in steps of 0.25, 4.50 to
6.00 in steps of 0.50. Prism and Accessory lens included.