This is the RX Lens for Dive Rite 125 Mask Scuba Diving Prescription Mask Lens - Optical Lens ONLY Features: Prescription mask available - Item code: MSK186 Please note there will be an additional 2 to 3 days processing time for most RX lenses Optical Lens for Dive Rite 125 Masks.(Optical Lens ONLY) Cost is per single lens only Mask lenses range from -1.0 to -8.0 in .5 increments. You may mix and match as needed. Optical Lens for Dive Rite 125 Masks. Returns are not accepted for used lens. Only unused lens are eligible for return with store credit.