The #1 lens (yellow dot on aperture) is weak clarifier lens which can be used with any scope. The #2 lens (green dot on aperture) is standard clarifier. This lens will usually work best with 3, or power scope lens or larger. The #3 lens (red dot on aperture) is mainly used to clear up high powered lens. All super peep apertures will work with the super ball peep housing. Clarifierluded.