<ul> <li>Front side - M26.5x0.5 female thread</li> <li>Rear side - M62x0.75 male thread</li> <li>Max. diameter - 68 mm</li> <li>Distance between flanges - 3mm</li> <li>Weight - 30 g</li> </ul> <p> </p> <p>This adapter allows using some Zeiss Mikrotar objectives with M26.5x0.5 thread (check yours since Mikrotars exist with different threads) in front of camera lenses with M62x0.75 filter thread.</p> <p>Made of anodized aluminium.</p>