<ul> <li>Front side - RMS (4/5″-36tpi) female thread</li> <li>Rear side - M30x0.75 male thread</li> <li>Distance between flanges - 0 mm</li> <li>Weight - 16 g</li> </ul> <p>This adapter allows using microscope objectives with RMS thread mount on microscopes with M30x0.75 thread mount.</p> <p>Height of both flanges is same, so this adapter preserves original parfocal height of objective.</p> <p>Made of bronze.</p>