Ophthalmic Equipment 232PCS Optometry Box Trial Lens Set Progressive Trial Lens Set Plastic Optical Instrument 1. Reduced-aperture trial lens of 25mm in diameter 232 pieces included 2. Power marks printed on single side of the handle 3. User Manual in English / Cleaning Cloth / Economic trial frame enclosed Product Type: Optical Optometry Trial Lens Set MOQ: 1pcs Sample: 5-7days for sample production Usage: For sunglasses,optical glasses,etc Feature: 1.lens diameter 36mm. 2.Rim material :metal 3.metal outside rim diameter 38mm rim inner diameter :36mm 4. lens quantity : 232pcs. 5. lens material :glass lens 6. case material :leather or aluminium case