Adjustable Iris diaphragm series is used in the optical system,it can provide different diameters to meet different requirements of light Adjusting the handle to change the diameter High Quality:Using high quality iron material,anti corrosion,durable and reliable performance Durable:without burrs and pressure points,the product is not deformed,exquisite and smooth Wide Application:The microscope iris adapter is very suitable for optical applications,it can be an accessory,camera,and optical platform