Celestron 94305 Two-inch Eyepiece and Filter Kit Three E-Lux 2&quot; Eyepieces - 3-element fully multicoated optical design with a 56apparent field of view 2&quot; Barlow Lens - 2x A Barlow lens doubles the magnifying power of your eyepiece by doubling its effective focal length. Five Colored Eyepiece (Lunar &amp; Planetary) Filters - 2&quot;, Included are Kodak Wratten #12 (deep yellow) 2&quot; Mirror Diagonal - This high quality 90-degree multicoated mirror diagonal The Aluminum Carrying Case is sturdy and well-built and holds all of the included items in the die-cut foam interior.