| Country Of Origin | China |
| Brand | FotoHigh |
| Model | RMS extension tube 15mm |
| Material | Full Metal |
| MPN | RMS-15MM |
Increase an Objective's Parfocal Length by 15 mm per Extender. adapter (made of aluminum, anodized black) to use RMS thread (.8"X 36tpi) objectives. The inside of the adapter is fully threaded to minimize reflections.