Microscope Aperture Manual Adjustable 1.5?26mm M42 Lens Optical Diaphragm for Replacement

Feature: 1. MICROSCOPE APERTURE: The thread Diameter of the diaphragm is M42 to M42, the number of blades is 14, fine workmanship, durable. 2. ADJUSTABLE INNER DIAMETER: The diaphragm is adjustable from 1.5 to 26mm, with an outer Diameter of 45mm, in an optical system to meet different through lighting requirements. 3. METAL MATERIAL: The light diaphragm is made of aluminum alloy and stainless steel for reliable performance and durability. 4. EASY OPERATION: The user can change the diaphragm Diameter by the handle, and the diaphragm inner Diameter can be adjusted. 5. COMPACT AND SMALL: The compact and practical design of the diaphragm makes the diaphragm a more practical way to work. Specification: Item Type: Microscope Aperture Material: Aluminum alloy, stainless steel Inner Hole Diameter: Approx. 1.526mm 0.061.02in Outer Diameter: Approx. 55mm 2.17in Thickness: Approx. 17.5mm 0.69in Number of Blade: 14 pieces Thread Diameter: M42 to M42. Package List: 1 x Microscope ApertureMICROSCOPE APERTURE: The thread Diameter of the diaphragm is M42 to M42, the number of blades is 14, fine workmanship, durable. ADJUSTABLE INNER DIAMETER: The diaphragm is adjustable from 1.5 to 26mm, with an outer Diameter of 45mm, in an optical system to meet different through lighting requirements. METAL MATERIAL: The light diaphragm is made of aluminum alloy and stainless steel for reliable performance and durability. EASY OPERATION: The user can change the diaphragm Diameter by the handle, and the diaphragm inner Diameter can be adjusted. COMPACT AND SMALL: The compact and practical design of the diaphragm makes the diaphragm a more practical way to work.