Trial lens set golden silver (Illuminated) - AO-07 Specifications 30 Pairs Each cx and cc sph 18.00 Pairs Each cx and cc cyl 0.25 to 4.00 in 0.25 Steps 0.25 to 3.50 in 0.25 Steps 4.50 to 6.00 in 0.50 Steps 4.00 to 6.00 in 0.50 Steps 7.00 to 14.00 in 1.00 Steps Prisms 1/2.1, 2, 3, 4, 5, 6, 8, 10, 12 16.00 to 20.00 in 2.00 Steps Accessories:- Maddox Red glass Green glass Stenopaic slit Prinhole 2 blank discs AO-07