Features 1、Aperture Adjustable: Aperture diameter can be changed by handle. The 1.8‑22mm adjustable aperture can meet different light transmission requirements. The 11 blades are easy to adjust, making the aperture work more stable. 2、Can be Used Repeatedly for a Long Time: Manual diaphragm is durable, does not fade, has a long service life, and can be used repeatedly for a long time. 3、Simple Installation: Manual adjustable aperture is easy to use, more convenient disassembly, eliminating cumbersome installation steps. 4、Stability: Aluminum alloy material, no burrs, comfortable to use, iris lens does not deform, strong elasticity, nice stability, improve your experience. 5、Durable Material: The adjustable aperture diaphragm is made of aluminum alloy material, reliable and durable, long service life, and can be used repeatedly for a long time. 6、Wide Range of Applications: This adjustable aperture is suitable for cameras, microscopes and other machines, which can help them work better. Specification Item Type: 1.8‑22mm Adjustable Iris Aperture Weight: 13g/0.46oz Material: Aluminum alloy Hole Diameter: 1.8-22mm Blade: 11 pieces Package List 1 x Adjustable Iris Aperture