Specification Brand : Gugxiom BulletPoint1 : ALUMINUM ALLOY CONSTRUCTION: Made of aluminum alloy, the dust cap is not only sturdy but also easy to use, providing long lasting guard for your telescope lens. BulletPoint2 : M54x0.75MM SIZE: The cover adopts an internal thread design, which can be directly screwed on the thread of the lens interface, protecting the lens more firmly. BulletPoint3 : PRECISE FIT: With a 1:1 ratio of open , the cover for the astronomical telescope magnifying lens fits perfectly with the magnifying lens, effectively protecting the lens. BulletPoint4 : VERSATILE APPLICATION: Telescope lens cover is widely used, suitable for telescope eyepieces and telephoto zoom eyepieces. Its use is simple and can easily meet your needs. BulletPoint5 : EASY TO USE: The telescope lens dust cap is designed for user convenience, allowing for easy installation and removal. It offers a hassle way to ensure the cleanliness. ItemName : Telescope Lens Cap, Dust Proof with Internal Thread, Aluminum Alloy, M54X0.75mm, for Astronomical Telescope Eyepieces, Zoom Eyepieces ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 7 centimeters ItemPackageDimensions_Width : 7 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : binocular-accessories Manufacturer : Gugxiom ModelName : Gugxiomaycsu7v2b4 ModelNumber : Gugxiomaycsu7v2b4 PartNumber : Gugxiomaycsu7v2b4 ProductDescription : 1. ALUMINUM ALLOY CONSTRUCTION: Made of aluminum alloy, the dust cap is not only sturdy but also easy to use, providing long lasting guard for your telescope lens. 2. M54x0.75MM SIZE: The cover adopts an internal thread design, which can be directly screwed on the thread of the lens interface, protecting the lens more firmly. 3. PRECISE FIT: With a 1:1 ratio of open , the cover for the astronomical telescope magnifying lens fits perfectly with the magnifying lens, effectively protecting the lens. 4. VERSATILE APPLICATION: Telescope lens cover is widely used, suitable for telescope eyepieces and telephoto zoom eyepieces. Its use is simple and can easily meet your needs. 5. EASY TO USE: The telescope lens dust cap is designed for user convenience, allowing for easy installation and removal. It offers a hassle way to ensure the cleanliness.