The New designed Retinoscopy Rack Set in bamboo case GD1207 is made by metal handle and glasses lens, the pathway has 1, 2, 3, 4, 5, 6, 7, 8, 9 fixed powers, the slider has 0.5D and 10D, so the total powers will be from 1.00 to 9.50 in 0.5D, from 10.00D to 19.00D in 1.00 steps.