View cart “#137EBP Scuba Spec” has been added to your cart. Prescription Bifocal Lenses$95.00 Per Pair – Free USPS First Class Shipping – (Near vision segment = 28 mm wide x 19 mm high) Prescription Bifocal Lenses quantity Add to cart Category: Uncategorized Related products Additional Anchor Bracket (does not include lenses) Add to cart #276XT Smoke SpecThe #276XT Smoke Spec insert with extension bracket. Click here for the Smoke Spec Insert Guide for examples of compatible masks. Click here for insert specs. Instruction page. (does not include lenses) Add to cart