Sure-Loc’s Lenses are a perfect addition to a Sure-Loc Scope. Each lens is made from premium ED glass, and is outfitted with multiple coatings to enhance performance including a scratch resistant coating, a waterproof coating, and an anit-glare coating. In addition, these lenses are compatible with Sure-Loc’s scopes, and also accept sunshades. Sure-Loc 4X 35mm Lens, Non-Drilled for .19" Fiber SL52494