Feature:
1. SIZE AND THREAD: This iris aperture 1.5 to 29mm adjustable inner diameter, 55mm outer diameter, M42 to M42 thread.
2. ADJUSTABLE DESIGN: Adjustable diaphragm providing holes with different diameters in the optical system to meet different light requirements.
3. SIMPLE OPERATION: Change the aperture diameter through the handle, which is easy to operate and convenient to adjust.
4. PREMIUM MATERIALS: Made of aluminum alloy and stainless steel materials, ensure reliable performance and lasting durability.
5. HIGHLY PRACTICAL: The compact design makes the optical aperture diaphragm a more practical working mode.

How to Use:
Directly install and use.

Specification:
Item Type: Iris Aperture
Material: Aluminum Alloy, Stainless Steel
Inner Hole Diameter: Approx. 1.5-29mm/0.06-1.1in
Outer Diameter: Approx. 55mm/2.2in
Thickness: Approx. 17.5mm/0.7in
Number of Blades: 10
Thread Diameter: M42 to M42

Package List:
1 x Iris Aperture