The Celestron First Scope 76 Accessory Kit is designed to expand your First Scope telescope. Contains:-12.5 mm Eyepiece (1.25' ). Increases the power to 24x.- 6 mm Eyepiece (1.25' ). This eyepiece increases the power to 50x. -Moon Filter (1.25'). A moon filter reduces the brightness of the moon & improves contrast so greater detail can be observed on the lunar surface. The filter has threads on it which screw into the bottom of the eyepieces.-5x 24 Finderscope & bracket. This finderscope with bracket makes it easier to locate astronomical objects with the First Scope telescope because of its much wider field of view & low magnification. Installation is simple with no tools necessary.-CD-ROM The Sky X. Lets you explore & develop an understanding of basic astronomy. This planetarium software is capable of printing star charts, displaying astronomical photos, helps identify planets & stars, learn the constellations, & much more. Operating Systems: Windows XP & Vista, as well as MAC 10.4.8 & later.-Nylon Carrying Bag for First Scope Telescope & accessories in a tote bag for easy & safe transportation.