ITEM NAME:Professional Optical Optic Eye Optometry Test Trial Lenses Frame UniveS Nw Professional Optical Optic Eye Optometry Test Trial Lenses Frame Universal Product Features: 1. High quality nylon material; 2. Stainless steel slot; 3. Aluminum rotary knob; 4. Stretchable mirror leg design; 5. Spring leg design; 6. Silicone nose rest, more comfortable to wear; Description: Interpupillary distance: 52 Package Include: 1 Pcs Eye Optometry Test Trial Lenses Frame.Silicone nose rest, more comfortable to wear;. Interpupillary distance: 52. Stainless steel slot;.