<ul> <li>Front side - M86x1 female thread</li> <li>Rear side - M62x0.75 male thread</li> </ul> <p>This adapter has few functions:</p> <ol> <li>Allows using M86x1 filters on lenses with M62x0.75 filter thread.</li> <li>Allows coupling such lens with a matte box with 95mm opening.</li> <li>Additional M58x0.75 female thread allows using 58mm screw-in filter in this setup.</li> </ol> <p>Known compatible lenses are:</p> <ol> <li>LOMO OKS11-35-1.</li> </ol> <p>Made of anodized aluminium.</p>