Feature 1Aluminum Alloy Material: The lens diaphragm is made of premium aluminum alloy material, providing durability and a long lifespan. It can be used repeatedly for a long time, delivering a great user experience. 2Adjustable Diaphragm: The microscope diaphragm adapter can change the diameter of the diaphragm through a handle. The adjustable diaphragm ranging from 3mm to 52mm meets different transparency requirements. With 14 blades for easy adjustment, ensuring stable diaphragm operation. 3Practical and Stable: The camera diaphragm features a compact and practical design, with exquisite manufacturing craftsmanship, ensuring convenient and stable diaphragm operation with reliable performance. 4Versatile Application: The lens diaphragm is versatile and compatible with various optical instruments and cameras, enhancing their performance and functionality. 5Easy Installation: The manually adjustable lens optical diaphragm is easy to use and hassle free to install, saving you from complicated installation steps.Item Type: Lens DiaphragmMaterial: Aluminum alloyWeight: Approx. 66g/2.3ozHole Inner Diameter: Approx. 3 to 52mm/0.1 to 2.0in .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 xLens Diaphragm1 x Storage Box