<p>This geared ring is purposed for LOMO lenses with OCT-19 mount in Kinor housing. Such lenses have original 50 pitch (mod 0.5) gears secured with 3 screws on the rear of the focus ring. Our gears have industry standard 32 pitch (mod 0.8). Moreover, our gears are wider (8mm instead of original 4mm) and more convenient therefore.</p> <p>Both original and replacement gears have special cut-outs allowing to remove and install them without lens disassembling. All you need is slot screwdriver and 2 minutes.</p> <p>No screws included since you'll used same screws that secure original gear.</p> <p>Tested with 18mm, 22mm, 28mm, 35mm, 50mm, 75mm, 100mm lenses in Kinor housing.</p> <p><strong>For sale is the 32 pitch gear only. All other pictures are for illustrations only - you can see process of replacing original gear on 18mm lens, and sample of other two lenses - 22mm and 35mm.</strong></p>