Enhance your optical system with this premium Metal Iris Diaphragm, designed to offer precise control over light transmission with multiple aperture sizes. Featuring a compact and practical design, this diaphragm ensures stable performance and reliable operation, making it an essential component for various optical and imaging applications. Easily adjust the aperture diameter using the handle to meet diverse lighting requirements. With five aperture size options available, you can select the perfect fit for your specific needs. Key Features: · Multiple Aperture Sizes: Choose from five diaphragm models with different minimum and maximum aperture diameters ranging from 0.8mm to 25mm, allowing versatile light control. · Smooth Adjustment: Convenient handle-operated aperture changes enable quick and precise control over the light transmission. · Durable Metal Construction: Crafted from high-quality metal, ensuring long-lasting, stable performance and excellent reliability. · Stable and Compact Design: The compact build enhances operational stability for consistent and accurate performance in optical setups. · Variety of Blade Counts: Models come with 8 to 14 blades, providing fine control over aperture shape and light flow. Specifications: SK25 · Magnified Diameter: 1.5-25mm · Material: Metal · Outer Diameter: 44mm · Inner Diameter: 25mm · Thickness: 8mm · Blades: 14 SK23 · Minimum Aperture Diameter: 1.5mm · Maximum Aperture Diameter: 23mm · Material: Metal · Outer Diameter: 37mm · Thickness: 7mm · Blades: 12 SK12 · Minimum Aperture Diameter: 1mm · Maximum Aperture Diameter: 12mm · Material: Metal · Outer Diameter: 19.8mm · Thickness: 5mm · Blades: 10 SK8 · Minimum Aperture Diameter: 0.8mm · Maximum Aperture Diameter: 8mm · Material: Metal · Outer Diameter: 14.8mm · Thickness: 4.5mm · Blades: 8 SK6 · Minimum Aperture Diameter: 0.8mm · Maximum Aperture Diameter: 6mm · Material: Metal · Outer Diameter: 13mm · Thickness: 6mm · Blades: 8 Package Includes: · 1 x Iris Diaphragm (model of choice) This Metal Iris Diaphragm series provides precise and durable aperture adjustment solutions for photography, microscopy, and other optical instruments that require fine light control. Select the appropriate model to optimize the light transmission and improve the performance of your optical system.