One end of the housing has a male flange to couple t an Oriel light source condenser, and the other end accepts fiber bundles with an 11 mm ferrule, or single fibers with appropriate connector. Choose the 77800 for glass fiber bundles and liquid light guides. The 77800 uses a fused silica F/2 lens. If you've changed your mind and want to return it, please contact me directly and we will do our best to assist.
I return all messages as soon as possible. We will make every effort to resolve any issues that may arise in a timely manner.