This product is made of high quality material. It comes with general standard inch thread, suitable for most telescopes. Easy to install and use, a good choice for you. Features: Made of high quality aluminum alloy and optical glass, this product is sturdy and durable.It can reduce eye strain and improve contrast and surface detail of the planet.Comes with general standard inch thread, suitable for most telescopes.Suitable for enhanced views of the Moon, Jupiter, Mars, Saturn, star cluster, nebula, deep sky, etc. (Red/Yellow/Blue/Green nebula filters can not be used to observe the sun.)Easy to install and use, a great choice for astronomical telescope lovers. Specifications: Condition: 100% Brand New Item Type: Telescope Lens Filter Material: Optical Glass + Aluminium Alloy Color: Red/Yellow/Blue/Green/BlackTransmittance: 83%Thread: Inch Thread (Fine Thread)Size: Approx. 31.7mm / 1.25inch Weight: Approx. 46g / 1.6oz Package List: 5 * Telescope Lens Filter Note: 1. Black filter is used as a solar filter. Don't use it when the sun is particularly strong. 2. Red/Yellow/Blue/Green nebula filters can not be used to observe the sun. About this item [1.25" Telescope Filter]: The telescopes ocular lens with general standard 1.25 inch fine thread; Help increase definition and contrast, reduce irradiation and lessen eye fatigue [5 Colors Lens Filter Set]: This eyepiece lens filter kit includes Red Blue Yellow Green Black color lens filter; Suitable for different planets observation [Fitment]: This telescope moon filter suits for enhancing views of the Moon, Jupiter, Mars, Saturn, star cluster, nebula, deep sky, etc [Premium Material]: This telescope lens filter is made of premium aluminum alloy and optical glass; Sturdy, durable & longlasting [Note Before Order]: ONLY the black color filter can be used to observe the sun when the sunlight is not that strong [1.25" Telescope Filter]: The telescopes ocular lens with general standard 1.25 inch fine thread; Help increase definition and contrast, reduce irradiation and lessen eye fatigue [5 Colors Lens Filter Set]: This eyepiece lens filter kit includes Red Blue Yellow Green Black color lens filter; Suitable for different planets observation [Fitment]: This telescope moon filter suits for enhancing views of the Moon, Jupiter, Mars, Saturn, star cluster, nebula, deep sky, etc [Premium Material]: This telescope lens filter is made of premium aluminum alloy and optical glass; Sturdy, durable & longlasting [Note Before Order]: ONLY the black color filter can be used to observe the sun when the sunlight is not that strong