Features 1Wide application, it is an accessory for laser, camera, and optical platform. 2Compact and practical design make the diaphragm works more stable. 3Exquisite and smooth, without burrs and pressure points, the product is not deformed. 4Using highquality iron material, anticorrosion, durable and reliable performance. 5Professional manufacturing, stable characteristics, high reliability. Specification Item Type: Iris Diaphragm Material: Iron Color: As shown in the picture Model: SK7.5 Enlargement Diameter: Approx.0.5-7.5mm / 0.02-0.30in Outer Diameter Size: Approx.14mm / 0.55in Inner Diameter: Approx.0.5-7.5mm / 0.02-0.30in Thickness: Approx.5.5mm / 0.22in Application: Accessory for laser, camera, and optical platform. Blades: 8 Package List 1 x Iris Diaphragm