The AstroMaster accessory kit is the perfect complement to the AstroMaster telescopes. It provides additional magnifications and filters to better observe details on the planets. You can also use it with any other telescope that has a 1.25" eyepiece holder. Enjoy your telescope even more with the Celestron AstroMaster accessory kit. In the plastic carrying case lined with foam, you will find the following accessories: 15 mm Kellner eyepiece - 1.25"; 6 mm Plossl eyepiece - 1.25"; 2X Barlow lens with T-thread - 1.25"; 80A blue filter - 1.25"; red filter - 1.25"; moon filter - 1.25"; microfiber cleaning cloth.