View cart “#276 Smoke Spec” has been added to your cart. #276XT Smoke Spec (does not include lenses) The #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. #276XT Smoke Spec quantity Add to cart Category: Uncategorized Related products Anti-Fog Lens CoatingPer Pair – Free USPS First Class Shipping – (Smoke Spec lens orders only) $65.00 Add to cart Additional Anchor Bracket (does not include lenses) Add to cart