This Trial Lens Set has a total of 260 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 option. Lenses included are the
following: ± Sph from 0.25 to 6.00 in steps of 0.25, from 6.50 to 10.00 in steps
of 0.50, from 11.00 to 14.00 in steps of 1.00 and from 16.00 to 20.00 in steps
of 2.00. ± Cylinders from 0.25 to 4.00 in steps of 0.25 and from 4.50 to 6.00 in
steps of 0.50. Prism and Accessory lens included.