Features Adjustable Inner Diameter: Customize the aperture from 1 to 12mm to ly control light intake for diverse photography needs Versatile Light Control: Achieve light throughput with various hole sizes, enhancing your optical system for better image quality User-Friendly Design: Effortlessly adjust the aperture diameter using the intuitive handle, making it ideal for both beginners and seasoned photographers Construction: Crafted from high-quality aluminum alloy and stainless steel, ensuring long-lasting performance and resilience in any shooting environment Compact and Practical: The sleek design of this diaphr allows for easy integration into your setup without taking up excessive space Features: 1、[Inner Diameter] The iris aperture diaphr has an adjusting inner diameter 1 to 12mm, an outer diameter of 28mm. 2、[Function Description] The aperture diaphr provides small holes of different diameters in the optical system to meet different light throughput requirements. 3、[Simple ] Change the diameter of the aperture diaphr by the handle, very easy to operate in practice and friendly to novices. 4、[Made of Aluminum Alloy and Stainless Steel] The camera aperture diaphr is made of aluminum alloy and stainless steel for reliable performance and ruggedness. 5、[Compact Appearance] This aperture diaphr uses a compact and practical design, making the aperture diaphr a practical way to work. Specification: Item Type: Aperture Diaphr Material: Aluminum alloy, stainless steel Inner Hole Diameter: Approx. 1-12mm / 0.04-0.47in Outer Diameter: Approx. 28mm / 1.10in Thickness: Approx. 18mm / 0.71in Number of Blades: 10 Port: CS to C Package List: 1 x Aperture Diaphr Package List 1 x Aperture Diaphragm