This four-piece 1.25 inch astronomy accessory kit let you get the most out and enhances the performance of your telescope, it contains 4mm/10mm/ 25mm Plossl eyepiece, a 2x Barlow lens w/ T adapter. Plossl Eyepiece Set: Multi coated offering the best image. Full metal, soft rubber eyeguard. The inside of the adapter is fully threaded to minimize reflections. Comes with 3 eyepieces that provide low, medium and high powered magnification for viewing a wide range of objects. (Moon, planets, or land) The focal length: 4mm 10mm 25mm Thread pitch: M28.5*0.6 (for standard 1.25 inches filters) Barlow Lens: 100% New and Never Used Doubles the magnification of any inserted 1.25 inch eyepiece A prime focus T-adapter for attaching a DSLR camera. A tele-extender for increasing the focal length of the telescope when attaching a DSLR camera With the T2 threads M42x0.75, you can attach a T-ring for astronomy photography Barrel Size: 1.25" Magnification Factor: 2X Lens Material: Pure Optical Glass Lens Lens Coating: Multilayer HD Broadband Green Film Sleeve Material: Metal Thread: M42*0.75 Pitch Total Height: 75mm Color: Black Total Weight: Approx. 400g Package List: 1 * Plossl 4mm Eyepiece 1 * Plossl 10mm Eyepiece 1 * Plossl 25mm Eyepiece 1 * 2X Barlow Lens Telescope in the picture is prop. Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. 1Multi coated offering the best image. 2Full metal, soft rubber eyeguard. 3The inside of the adapter is fully threaded to minimize reflections. 4Comes with 3 eyepieces that provide low, medium and high powered magnification for viewing a wide range of objects. (Moon, planets, or land) 5The focal length: 4mm 10mm 25mm