This economical eight-piece eyepiece and filter accessory kit enhances the performance of your Celestron AstroMaster, or nearly any other telescope. Includes two 1.25 eyepieces, a 2X Barlow lens, three filters, a cleaning cloth, and a case! With two extra eyepieces and a Barlow lens, you get four different magnifications to choose from. A Moon filter helps block out some moonlight so you can see more lunar detail, and the two color filters (Red & Blue) highlight features on Mars, Jupiter, and Saturn. A plastic, hard carry case keeps everything safe in the foam-lined interior. Get more enjoyment from your telescope with the Celestron AstroMaster Accessory Kit. Inside the plastic, foam-lined carry case youll find these accessories: 15 mm Kellner Eyepiece - 1.25 6 mm Plossl Eyepiece - 1.25 2X Barlow Lens with T-threads - 1.25 #80A Blue Filter - 1.25 #25 Red Filter - 1.25 Moon Filter - 1.25 Microfiber Cleaning Cloth Eyepieces- The 15 mm and 6 mm eyepieces can be used in any telescope with a 1.25 focuser. Each eyepiece is fully coated to improve light transmission and protect the optics. The 15 mm Kellner eyepiece offers a nice medium magnification view in most telescopes, and the 6 mm Plossl provides high magnifications, great for the Moon and planets, especially when seeing conditions are good. 2x Barlow Lens- Insert the 2x Barlow Lens between the eyepiece and the telescope and it doubles the magnification of any 1.25 eyepiece. Filters- Colored filters can be used to bring out certain details on a planets surface or its cloud structure.