This Celestron accessory kit can be used in any telescope with a 1.25" focuser. With two extra eyepieces and a Barlow lens, you'll have four different magnifications to choose from. The 17mm Plossl eyepiece is good for medium magnification with most telescopes, allowing you to view entire planets. When you want to get closer and look at the details, that's where the 6mm comes in handy. The third lens is a 2X Barlow lens which doubles the magnification of any 1.25" eyepiece you drop in, increasing your viewing options.
The included filters help draw out specific features: the medium-blue filter enhances contrast of the cloud belts on Jupiter and the deep red filter is a good choice when you want to define the polar ice caps on Mars. The moon filter blocks out glare on brightly lit bodies like Venus and Earth's moon.
The kit includes a microfiber cloth for safe cleaning of sensitive optics, and a hard plastic carrying case lined with foam so lenses won't get jostled or nicked when you're on the move.