Feature●Various Diameters. The optical system of the iris diaphragm is equipped with small apertures of different diameters to meet different light transmission requirements.●Stable Performance. The compact and practical diaphragm microscope iris design makes the diaphragm work more stable.●Handle Adjustment. The diameter of the iris diaphragm can be changed by the handle.●Meet Diverse Needs. We provide 5 kinds of aperture diaphragm microscope iris for you to choose to meet different requirements.●Reliable Performance. The iris of the diaphragm microscope is made of metal, which is reliable and durable.Description