This SVBONY seven-piece accessory kit enhances the performance of your telescope. Includes two 1.25"" Plossl eyepieces, a 2xBarlow lens that can be used visually or photographically, three eyepiece filter and a Portable bag. Plossl 6mm eyepiece ideal for observing details on planets, the Moon, and other celestial objects. Plossl 17mm eyepiece is suitable for observing a variety of celestial objects, including star clusters, galaxies, nebulae, and even some planetary details. 2X Barlow scope provides 2X magnification for visual observation and astrophotography, magnifying more details of planets, the moon and other celestial bodies, thus enhancing the observation experience. 82A light blue filter especially beneficial when viewing planets like Saturn or Jupiter, where it aids in highlighting banding and storms. Lunar Observations:Enhances the details of craters and maria on the Moon's surface, providing a clearer view during observations. By decreasing brightness, moon filter improve the contrast between the illuminated and shadowed areas on the Moon's surface. This makes features like craters, mountains, and maria more distinct and easier to observe. SVBONY newest 1.25"" red laser collimator includes removable 2"" adapter; the triple cemented lens to improve the stability of dot; it's designed for accurate collimation of all Newtonian and SCT reflector telescopes. The laser collimator can get better image from the telescope; just insert it into the eyepiece holder; adjust laser beam level; then adjust the telescope screw until the laser beam shoots into the target central. Designed for reflector telescope: Fit for standard 1.25"" and 2"" diameter interface with a 2"" adapte. Red laser with 7 brightness levels: Adjustable brightness making it easy to use at night and during the day. User adjustable collimator: 3 collimation screws on the body to get the laser collimator aligned.