This geared ring is purposed for Kiev-16U camera lenses (Mir-11, Vega 7-1, Tair-41).

One issue with these lenses is quite different diameter of original focus ring (from 43.5 to 46mm on my lenses). So, all these gears have 43mm inner diameter, and should be machined up to actual diameter of your rings.

Our gears have industry standard 32 pitch (mod 0.8). They are placed over original focus gears and secured with three set screws (installed).

• Inner diameter: 43mm
• Outer diameter: 56.7mm
• Thickness: 5mm
• Weight: 11g

For sale is the single gear only. All lenses are pictued for illustration only.

   IMPORTNAT: Once again, bore in these gears is smaller than necessary. They will not fit any Kiev-16U lens out of the box if you don't provide necessary diameters in comments with your order.