1-12MM Adjustable Iris Diaphragm Aperture Capacitor for Camera Microscope Module M4 Thread 10 Blades Metal Parts (Customizable)Product Description:Adjustable iris diaphragm is made of high quality alloy and steel, reliable and durable performance; It is used for microscope, camera and other optical instruments.We are manufacturer of iris diaphragm, we provide all kinds diaphfram diaphragiris and we have a special designer, welcome to wholesale and customization.Product features:Type: 1-12mm iris diaphragm (adjustable)Material: metal, reliable performance, durableThickness: 5 mmOuter diameter: 19.8 mmMaximum opening diameter: 12 mmMinimum aperture diameter: 1 mm