Product Description:

1. 20mm Max. Aperture, Iris Diaphragm
2. Maximum Aperture (mm):20.0
3. Minimum Aperture (mm):1.2
4. Outer Diameter (mm):30.0
5. Construction:Brass Housing, Blue Tempered Steel Leaves
6. Lever Diameter (mm):3.00
7. Lever Length (mm):13.20
8. Number of Leaves:12.00
9. Thickness (mm):5.50