Material: Aluminium Body And Stainless Steel Sides Permits Smooth And Easy Manipulation Of Bridge Adjustable saddle bridge. Best Quality As Export Quality. Light Weight And Fully Compact. Adjustable Trail Frame In Metal Material Fully Rotating. This frame adjustable is (Medic) type.Light weight adjustable trial frame for reduced aperture lenses & adjustable bridge. Separate PD adjustment for each eye to compensate for asymmetrical factors in facial structure. PD Scale: 24 – 38 mm for both right & left ( Approx.) Nose height adjustment : Moveable up to 14.5 mm